ZyXEL Communications P320W 802.11g Wireless Firewall Router User Manual ZyBook

ZyXEL Communications Corporation 802.11g Wireless Firewall Router ZyBook

Users Manual 2

P-320W User’s GuideChapter 3 Connection Wizard 51The following table describes the labels in this screen. Table 11 Extend(WPA-PSK) SecurityLABEL DESCRIPTIONPre-Shared KeyType from 8 to 63 case-sensitive ASCII characters. You can set up the most secure wireless connection by configuring WPA in the wireless LAN screens. You need to configure an authentication server to do this.Back Click Back to display the previous screen.Next Click Next to proceed to the next screen. Exit Click Exit to close the wizard screen without saving.3.3.3 OTISTThe following screen allows you to enable Prestige One-Touch Intelligent Security Technology (OTIST). One-Touch Intelligent Security Technology (OTIST) allows your Prestige to assign wireless clients the Prestige’s SSID and static WEP or WPA-PSK encryption settings. The wireless client must also support OTIST and have OTIST enabled. See Section 4.5 on page 72 for more information.Figure 18 OTIST
P-320W User’s Guide52 Chapter 3 Connection WizardThe following table describes the labels in this screen.Table 12 OTISTLABEL DESCRIPTIONDo you want to enable OTIST?Select the Yes radio button and click Next to proceed with the setup wizard and enable OTIST only when you click Finish in the final wizard screen.Click No and then Next to proceed to the following screen.Setup Key The default OTIST Setup Key is “01234567”. This key can be changed in the web configurator. Be sure to use the same OTIST Setup Key on the Prestige and wireless clients.Back Click Back to display the previous screen.Next Click Next to proceed to the next screen. Exit Click Exit to close the wizard screen without saving.Refer to the chapter on wireless LAN for more information.3.4 Connection Wizard: STEP 3: Internet ConfigurationThe Prestige offers three Internet connection types. They are Ethernet, PPP over Ethernet or PPTP. The wizard attempts to detect which WAN connection type you are using. If the wizard does not detect a connection type, you must select one from the drop-down list box. Check with your ISP to make sure you use the correct type.Figure 19 Connection Wizard: STEP 3: WAN Connection Type.
P-320W User’s GuideChapter 3 Connection Wizard 53The following table describes the labels in this screen,Table 13 Connection Wizard: STEP 3: WAN Connection TypeCONNECTION TYPE DESCRIPTIONEthernet Select the Ethernet option when the WAN port is used as a regular Ethernet. PPPoE Select the PPP over Ethernet option for a dial-up connection. If your ISP gave you a an IP address and/or subnet mask, then select PPTP.PPTP Select the PPTP option for a dial-up connection.3.4.1 Ethernet Connection TypeChoose Ethernet when the WAN port is used as a regular Ethernet.Figure 20 Ethernet Connection Type3.4.2 PPPoE Connection TypePoint-to-Point Protocol over Ethernet (PPPoE) functions as a dial-up connection. PPPoE is an IETF (Internet Engineering Task Force) standard specifying how a host personal computer interacts with a broadband modem (for example DSL, cable, wireless, etc.) to achieve access to high-speed data networks.For the service provider, PPPoE offers an access and authentication method that works with existing access control systems (for instance, RADIUS).
P-320W User’s Guide54 Chapter 3 Connection WizardOne of the benefits of PPPoE is the ability to let end users access one of multiple network services, a function known as dynamic service selection. This enables the service provider to easily create and offer new IP services for specific users.Operationally, PPPoE saves significant effort for both the subscriber and the ISP/carrier, as it requires no specific configuration of the broadband modem at the subscriber’s site.By implementing PPPoE directly on the Prestige (rather than individual computers), the computers on the LAN do not need PPPoE software installed, since the Prestige does that part of the task. Furthermore, with NAT, all of the LAN's computers will have Internet access.Refer to the appendix for more information on PPPoE.Figure 21 PPPoE Connection TypeThe following table describes the labels in this screen.Table 14 PPPoE Connection TypeLABEL DESCRIPTIONISP Parameter for Internet AccessService Name Type the name of your service provider.User Name Type the user name given to you by your ISP. Password Type the password associated with the user name above.Next Click Next to continue. Back Click Back to return to the previous screen. Exit Click Exit to close the wizard screen without saving.
P-320W User’s GuideChapter 3 Connection Wizard 553.4.3 PPTP Connection TypePoint-to-Point Tunneling Protocol (PPTP) is a network protocol that enables transfers of data from a remote client to a private server, creating a Virtual Private Network (VPN) using TCP/IP-based networks.PPTP supports on-demand, multi-protocol, and virtual private networking over public networks, such as the Internet.Refer to the appendix for more information on PPTP.Note: The Prestige supports one PPTP server connection at any given time.Figure 22 PPTP Connection TypeThe following table describes the fields in this screenTable 15 PPTP Connection TypeLABEL DESCRIPTIONISP Parameters for Internet AccessUser Name Type the user name given to you by your ISP. Password Type the password associated with the User Name above.PPTP ConfigurationGet automatically from ISPSelect this radio button if your ISP did not assign you a fixed IP address.Use fixed IP addressSelect this radio button, provided by your ISP to give the Prestige a fixed, unique IP address.My IP Address Type the (static) IP address assigned to you by your ISP.
P-320W User’s Guide56 Chapter 3 Connection Wizard3.4.4 Your IP AddressThe following wizard screen allows you to assign a fixed IP address or give the Prestige an automatically assigned IP address depending on your ISP.Figure 23 Your IP AddressMy IP Subnet MaskType the subnet mask assigned to you by your ISP (if given).Server IP AddressType the IP address of the PPTP server.Connection ID/NameEnter the connection ID or connection name in this field. It must follow the "c:id" and "n:name" format. For example, C:12 or N:My ISP.This field is optional and depends on the requirements of your ISP.Back Click Back to return to the previous screen.Next Click Next to continue. Exit Click Exit to close the wizard screen without saving.Table 15 PPTP Connection TypeLABEL DESCRIPTION
P-320W User’s GuideChapter 3 Connection Wizard 57The following table describes the labels in this screenTable 16 Your IP AddressLABEL DESCRIPTIONGet automatically from ISP Select this option If your ISP did not assign you a fixed IP address. This is the default selection. Use fixed IP address provided by your ISPSelect this option If the ISP assigned a fixed IP address. The fixed IP address should be in the same subnet as your broadband modem or router.Back Click Back to return to the previous screen.Next Click Next to continue. Exit Click Exit to close the wizard screen without saving.3.4.5 WAN MAC AddressEvery Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00-A0-C5-00-00-02.You can configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN. Once it is successfully configured, the address will be copied to the "rom" file (ZyNOS configuration file). It will not change unless you change the setting or upload a different "rom" file.Table 17 Example of Network Properties for LAN Servers with Fixed IP AddressesChoose an IP address 192.168.1.2-192.168.1.32; 192.168.1.65-192.168.1.254.Subnet mask 255.255.255.0Gateway (or default route) 192.168.1.1(Prestige LAN IP)This screen allows users to configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN.
P-320W User’s Guide58 Chapter 3 Connection WizardFigure 24 WAN MAC AddressThe following table describes the fields in this screen.Table 18 WAN MAC AddressLABEL DESCRIPTIONFactory Default Select Factory Default to use the factory assigned default MAC address. Spoof this computer’s MAC addressSelect this option and click Clone MAC to clone the MAC address in the MAC Address field. Once it is successfully configured, the address will be copied to the rom file (ZyNOS configuration file). It will not change unless you change the setting or upload a different ROM file. It is advisable to clone the MAC address from a computer on your LAN even if your ISP does not presently require MAC address authentication.MAC Address Enter the MAC address of the computer on the LAN whose MAC address you want to clone.Back Click Back to return to the previous screen.Next Click Next to continue. Exit Click Exit to close the wizard screen without saving.3.4.6 Connection Wizard CompleteFollow the on-screen instructions and click Next.
P-320W User’s GuideChapter 3 Connection Wizard 59Figure 25 Connection Wizard CompleteClick Finish to complete the wizard setup and save your configuration.Figure 26 Connection Wizard: CongratulationWell done! You have successfully set up your Prestige to operate on your network and access the Internet.
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P-320W User’s GuideChapter 4 Wireless LAN 61CHAPTER 4Wireless LAN This chapter discusses how to configure Wireless LAN.4.1 IntroductionA wireless LAN can be as simple as two computers with wireless LAN adapters communicating in a peer-to-peer network or as complex as a number of computers with wireless LAN adapters communicating through access points which bridge network traffic to the wired LAN. Note: See the WLAN appendix for more detailed information on WLANs.4.2 Wireless Security OverviewWireless security is vital to your network to protect wireless communication between wireless stations, access points and the wired network.Wireless security methods available on the Prestige are data encryption, wireless client authentication, restricting access by device MAC address and hiding the Prestige identity.4.2.1 Encryption• Use WPA security if you have WPA-aware wireless clients and a RADIUS server. WPA has user authentication and improved data encryption over WEP.• Use WPA-PSK if you have WPA-aware wireless clients but no RADIUS server.• If you don’t have WPA-aware wireless clients, then use WEP key encrypting. A higher bit key offers better security at a throughput trade-off. You can use Passphrase to automatically generate 64-bit or 128-bit WEP keys or manually enter 64-bit or 128-bit WEP keys.4.2.2 AuthenticationWPA has user authentication and you can also configure IEEE 802.1x to use a RADIUS server to authenticate wireless clients before joining your network. • Use RADIUS authentication if you have a RADIUS server. See the appendices for information on protocols used when a client authenticates with a RADIUS server via the Prestige.
P-320W User’s Guide62 Chapter 4 Wireless LAN4.2.3 Restricted AccessThe MAC Filter screen allows you to configure the AP to give exclusive access to devices (Allow) or exclude them from accessing the AP (Deny). 4.2.4 Hide Prestige IdentityIf you hide the ESSID, then the Prestige cannot be seen when a wireless client scans for local APs. The trade-off for the extra security of “hiding” the Prestige may be inconvenient for some valid WLAN clients. 4.2.5 Using OTISTIn a wireless network, the wireless clients must have the same SSID and security settings as the access point (AP) or wireless router (we will refer to both as “AP” here) in order to associate with it. Traditionally this meant that you had to configure the settings on the AP and then manually configure the exact same settings on each wireless client.OTIST (One-Touch Intelligent Security Technology) allows you to transfer your AP’s SSID and WEP or WPA-PSK security settings to wireless clients that support OTIST and are within transmission range. You can also choose to have OTIST generate a WPA-PSK key for you if you didn’t configure one manually.Note: OTIST replaces the pre-configured wireless settings on the wireless clients.4.3 Configuring Wireless LAN on the Prestige1Configure the SSID and Security Mode in the Wireless screen. If you configure WEP, you can’t configure WPA or WPA-PSK. 2Use the MAC Filter screen to restrict access to your wireless network by MAC address. 3If you have OTIST-enabled clients, configure OTIST in the OTIST screen. OTIST transfers device SSID and WEP or WPA-PSK key settings (if enabled) to wireless clients.
P-320W User’s GuideChapter 4 Wireless LAN 63The following figure shows the relative effectiveness of these wireless security methods available on your Prestige.Table 19 ZyAIR Wireless Security LevelsSecurity Level Security TypeLeast Secure Most SecureUnique SSID (Default)Unique SSID with Hide SSID EnabledMAC Address FilteringWEP EncryptionIEEE802.1x EAP with RADIUS Server AuthenticationWi-Fi Protected Access (WPA)Note: You must enable the same wireless security settings on the Prestige and on all wireless clients that you want to associate with it. 4.4 General Wireless LAN Screen Note: If you are configuring the Prestige from a computer connected to the wireless LAN and you change the Prestige’s SSID or WEP settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the Prestige’s new settings.Click the Wireless LAN link under Network to open the General screen.Figure 27 Wireless: General
P-320W User’s Guide64 Chapter 4 Wireless LANThe following table describes the general wireless LAN labels in this screen.Table 20 Wireless: GeneralLABEL DESCRIPTIONEnable Wireless LANClick the check box to activate wireless LAN.Name(SSID) (Service Set IDentity) The SSID identifies the Service Set with which a wireless station is associated. Wireless stations associating to the access point (AP) must have the same SSID. Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN. Note: If you are configuring the Prestige from a computer connected to the wireless LAN and you change the Prestige’s SSID or WEP settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the Prestige’s new settings.Hide SSID Select this check box to hide the SSID in the outgoing beacon frame so a station cannot obtain the SSID through passive scanning using a site survey tool.Channel SelectionSet the operating frequency/channel depending on your particular region. Select a channel from the drop-down list box. Refer to the Connection Wizard chapter for more information on channels.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.See the rest of this chapter for information on the other labels in this screen. 4.4.1 No SecuritySelect No Security to allow wireless stations to communicate with the access points without any data encryption. Note: If you do not enable any wireless security on your Prestige, your network is accessible to any wireless networking device that is within range.
P-320W User’s GuideChapter 4 Wireless LAN 65Figure 28 Wireless: No SecurityThe following table describes the labels in this screen.Table 21 Wireless No SecurityLABEL DESCRIPTIONSecurity Mode Choose No Security from the drop-down list box.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.4.4.2 WEP EncryptionWEP encryption scrambles the data transmitted between the wireless stations and the access points to keep network communications private. It encrypts unicast and multicast communications in a network. Both the wireless stations and the access points must use the same WEP key.Your Prestige allows you to configure up to four 64-bit or 128-bit WEP keys but only one key can be enabled at any one time.In order to configure and enable WEP encryption; click Wireless LAN and Wireless to display the General screen.Select Static WEP from the Security Mode list.
P-320W User’s Guide66 Chapter 4 Wireless LANFigure 29 Wireless: Static WEP EncryptionThe following table describes the wireless LAN security labels in this screen.Table 22 Wireless: Static WEP EncryptionLABEL DESCRIPTIONPassphrase Enter a Passphrase (up to 32 printable characters) and clicking Generate. The Prestige automatically generates four different WEP keys.Generate After you enter the passphrase, click Generate to have the Prestige generates four different WEP keys automatically.Clear Click Clear to discard the passphrase you configured in the Passphrase field and the WEP key(s) generated automatically or maually configured.WEP EncryptionSelect 64-bit WEP or 128-bit WEP to enable data encryption. Authentication MethodSelect Auto, Open System or Shared Key from the drop-down list box. ASCII Select this option in order to enter ASCII characters as the WEP key. Hex Select this option in order to enter hexadecimal characters as a WEP key. The preceding "0x", that identifies a hexadecimal key, is entered automatically.
P-320W User’s GuideChapter 4 Wireless LAN 674.4.3 Introduction to WPA Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA is preferred to WEP as WPA has user authentication and improved data encryption. See the appendix for more information on WPA user authentication and WPA encryption.If both an AP and the wireless clients support WPA and you have an external RADIUS server, use WPA for stronger data encryption. If you don't have an external RADIUS server, you should use WPA-PSK (WPA-Pre-Shared Key) that only requires a single (identical) password entered into each access point, wireless gateway and wireless client. As long as the passwords match, a wireless client will be granted access to a WLAN. 4.4.4 WPA-PSK Application ExampleA WPA-PSK application looks as follows.1First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key (PSK) must consist of between 8 and 63 ASCII characters (including spaces and symbols).2The AP checks each wireless client's password and (only) allows it to join the network if the password matches.3The AP derives and distributes keys to the wireless clients.4The AP and wireless clients use the TKIP encryption process to encrypt data exchanged between them.Key 1 to Key 4 The WEP keys are used to encrypt data. Both the Prestige and the wireless stations must use the same WEP key for data transmission.If you chose 64-bit WEP, then enter any 5 ASCII characters or 10 hexadecimal characters ("0-9", "A-F").If you chose 128-bit WEP, then enter 13 ASCII characters or 26 hexadecimal characters ("0-9", "A-F"). You must configure at least one key, only one key can be activated at any one time. The default key is key 1.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.Table 22 Wireless: Static WEP EncryptionLABEL DESCRIPTION
P-320W User’s Guide68 Chapter 4 Wireless LANFigure 30 WPA-PSK Authentication4.4.5 WPA-PSK Authentication ScreenIn order to configure and enable WPA-PSK Authentication; click the Wireless LAN link under Network to display the General screen. Select WPA-PSK from the Security Mode list.Figure 31 Wireless: WPA-PSKThe following table describes the labels in this screen.Table 23 Wireless: WPA-PSKLABEL DESCRIPTIONPre-Shared Key The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials.Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including spaces and symbols).Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.
P-320W User’s GuideChapter 4 Wireless LAN 694.4.6 WPA with RADIUS Application ExampleYou need the IP address of the RADIUS server, its port number (default is 1812), and the RADIUS shared secret. A WPA application example with an external RADIUS server looks as follows. "A" is the RADIUS server. "DS" is the distribution system.1The AP passes the wireless client's authentication request to the RADIUS server.2The RADIUS server then checks the user's identification against its database and grants or denies network access accordingly.3The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the pair-wise key to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients.Figure 32 WPA with RADIUS Application Example4.4.7 Wireless Client WPA SupplicantsA wireless client supplicant is the software that runs on an operating system instructing the wireless client how to use WPA. At the time of writing, the most widely available supplicant is the WPA patch for Windows XP, Funk Software's Odyssey client. The Windows XP patch is a free download that adds WPA capability to Windows XP's built-in "Zero Configuration" wireless client. However, you must run Windows XP to use it.4.4.8 WPA Authentication ScreenIn order to configure and enable WPA Authentication; click the Wireless LAN link under Network to display the General screen. Select WPA from the Security Mode list.
P-320W User’s Guide70 Chapter 4 Wireless LANFigure 33 Wireless: WPAThe following table describes the labels in this screen.Table 24 Wireless: WPALABEL DESCRIPTIONAuthentication Server IP Address Enter the IP address of the external authentication server in dotted decimal notation.Port Number Enter the port number of the external authentication server. The default port number is 1812. You need not change this value unless your network administrator instructs you to do so with additional information. Shared Secret Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external authentication server and the Prestige.The key must be the same on the external authentication server and your Prestige. The key is not sent over the network. Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.4.4.9 IEEE 802.1x OverviewYou need the following for IEEE 802.1x authentication.• A computer with an IEEE 802.11 a/b/g wireless LAN adapter and equipped with a web browser (with JavaScript enabled) and/or Telnet.
P-320W User’s GuideChapter 4 Wireless LAN 71• A wireless station computer must be running IEEE 802.1x-compliant software. Not all Windows operating systems support IEEE 802.1x (see the Microsoft web site for details). For other operating systems, see their documentation. If your operating system does not support IEEE 802.1x, then you may need to install IEEE 802.1x client software.• An optional network RADIUS server for remote user authentication and accounting.4.4.10 IEEE 802.1x and Dynamic WEP Key Exchange Screen In order to configure and enable 802.1x and dynamic WEP key exchange; click the Wireless LAN link under Network to display the General screen. Select 802.1x + Dynamic WEP from the Security Mode list.Figure 34 Wireless: 802.1x and Dynamic WEPThe following table describes the labels in this screen.Table 25 Wireless: 802.1x and Dynamic WEPLABEL DESCRIPTIONDynamic WEP Key ExchangeSelect 64-bit WEP or 128-bit WEP to enable data encryption. Up to 32 stations can access the Prestige when you configure dynamic WEP key exchange.Authentication Server IP Address Enter the IP address of the external authentication server in dotted decimal notation.Port Number Enter the port number of the external authentication server. The default port number is 1812. You need not change this value unless your network administrator instructs you to do so with additional information.
P-320W User’s Guide72 Chapter 4 Wireless LAN4.5 OTISTOTIST (One-Touch Intelligent Security Technology) allows your Prestige to set the wireless client to use the same wireless settings as the Prestige. Note: The wireless client must support OTIST and have OTIST enabled. The following are the wireless settings that the Prestige assigns to the wireless client if OTIST is enabled on both devices and the OTIST setup keys are the same. •SSID • Security (WEP or WPA-PSK) Note: This will replace the pre-configured wireless settings on the wireless clients.4.5.1 Enabling OTISTYou must enable OTIST on both the AP and wireless client before you start transferring settings.Note: The AP and wireless client(s) MUST use the same Setup key.4.5.1.1 APYou can enable OTIST using the Reset button or the web configurator. 4.5.1.1.1 Reset buttonIf you use the Reset button, the default (01234567) or previous saved (through the web configurator) Setup key is used to encrypt the settings that you want to transfer. Hold in the Reset button for one or two seconds. Note: If you hold in the Reset button too long, the device will reset to the factory defaults!Shared Secret Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external authentication server and the Prestige.The key must be the same on the external authentication server and your Prestige. The key is not sent over the network. Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.Table 25 Wireless: 802.1x and Dynamic WEPLABEL DESCRIPTION
P-320W User’s GuideChapter 4 Wireless LAN 734.5.1.1.2 Web ConfiguratorClick the Wireless LAN link under Network and then the OTIST tab. The following screen displays.Figure 35 Wireless: OTISTThe following table describes the labels in this screen.Table 26 Wireless: OTISTLABEL DESCRIPTIONSetup Key Type an OTIST Setup Key of exactly eight ASCII characters in length. The default OTIST setup key is "01234567".Note: If you change the OTIST setup key here, you must also make the same change on the wireless client(s).
P-320W User’s Guide74 Chapter 4 Wireless LAN4.5.1.2 Wireless ClientStart the ZyXEL utility and click the Adapter tab. Select the OTIST check box, enter the same Setup Key as your AP’s and click Save.Figure 36 Example Wireless Client OTIST ScreenYes! To have OTIST automatically generate a WPA-PSK key, select this check box. If you manually configured a WEP key or a WPA-PSK key and you also select this check box, then the key you manually configured is used.If you want to configure your own WPA-PSK and have OTIST use that WPA-PSK, you must:• Configure a WPA-PSK in the Wireless General screen.• Clear the Yes! checkbox in the OTIST screen and click Apply.Note: If you already have a WPA-PSK configured in the Wireless General screen, and you run OTIST with Yes! selected, OTIST will not replace the WPA-PSK. Clear the checkbox in the OTIST screen.If you want OTIST to automatically generate a WPA-PSK, you must:• Change your security to No Security in the Wireless General screen.• Select the the Yes! checkbox in the OTIST screen and click Apply.• The Wireless General screen displays an auto generated WPA-PSK and is now in WPA-PSK security mode. The WPA-PSK security settings are assigned to the wireless client when you start OTIST.Start Click Start to encrypt the wireless security data using the setup key and have the Prestige set the wireless station to use the same wireless settings as the Prestige. You must also activate and start OTIST on the wireless station at the same time. The process takes three minutes to complete.Table 26 Wireless: OTISTLABEL DESCRIPTION
P-320W User’s GuideChapter 4 Wireless LAN 754.5.2 Starting OTISTNote: You must click Start in the AP OTIST web configurator screen and in the wireless client(s) Adapter screen all within three minutes (at the time of writing). You can start OTIST in the wireless clients and AP in any order but they must all be within range and have OTIST enabled.1In the AP, a web configurator screen pops up showing you the security settings to transfer. After reviewing the settings, click OK.Figure 37 Security Key2This screen appears while OTIST settings are being transferred. It closes when the transfer is complete. Figure 38 OTIST in Progress (AP) Figure 39 OTIST in Progress (Client)• In the wireless client, you see this screen if it can't find an OTIST-enabled AP (with the same Setup key). Click OK to go back to the ZyXEL utility main screen. Figure 40 No AP with OTIST Found• If there is more than one OTIST-enabled AP within range, you see a screen asking you to select one AP to get settings from.4.5.3 Notes on OTIST1If you enabled OTIST in the wireless client, you see this screen each time you start the utility. Click Ye s for it to search for an OTIST-enabled AP.
P-320W User’s Guide76 Chapter 4 Wireless LANFigure 41 Start OTIST?2If an OTIST-enabled wireless client loses its wireless connection for more than ten seconds, it will search for an OTIST-enabled AP for up to one minute. (If you manually have the wireless client search for an OTIST-enabled AP, there is no timeout; click Cancel in the OTIST progress screen to stop the search.)3When the wireless client finds an OTIST-enabled AP, you must still click Start in the AP OTIST web configurator screen or hold in the Reset button (for one or two seconds) for the AP to transfer settings.4If you change the SSID or the keys on the AP after using OTIST, you need to run OTIST again or enter them manually in the wireless client(s).5If you configure OTIST to generate a WPA-PSK key, this key changes each time you run OTIST. Therefore, if a new wireless client joins your wireless network, you need to run OTIST on the AP and ALL wireless clients again.4.6 MAC FilterThe MAC filter screen allows you to configure the Prestige to give exclusive access to up to 32 devices (Allow) or exclude up to 32 devices from accessing the Prestige (Deny). Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00-A0-C5-00-00-02. You need to know the MAC address of the devices to configure this screen.To change your Prestige’s MAC filter settings, click the Wireless LAN link under Network and then the MAC Filter tab. The screen appears as shown.
P-320W User’s GuideChapter 4 Wireless LAN 77Figure 42 Wireless: MAC Address FilterThe following table describes the labels in this menu.Table 27 MAC Address FilterLABEL DESCRIPTIONActive Select Yes from the drop down list box to enable MAC address filtering.Filter Action Define the filter action for the list of MAC addresses in the MAC Address table. Select Deny to block access to the Prestige, MAC addresses not listed will be allowed to access the Prestige Select Allow to permit access to the Prestige, MAC addresses not listed will be denied access to the Prestige. Set This is the index number of the MAC address.MAC Address Enter the MAC addresses of the wireless station that are allowed or denied access to the Prestige in these address fields. Enter the MAC addresses in a valid MAC address format, that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.
P-320W User’s Guide78 Chapter 4 Wireless LAN4.7 Wireless LAN Advanced ScreenSee the appendix for background information on roaming.To enable roaming on your Prestige, click the Wireless LAN link under Network and then the Advanced tab. The screen appears as shown.Figure 43 Wireless: AdvancedThe following table describes the labels in this screen. Table 28 Wireless: AdvancedLABEL DESCRIPTIONWireless Advanced SetupRTS/CTS ThresholdEnter a value between 0 and 2432. Fragmentation ThresholdIt is the maximum data fragment size that can be sent. Enter a value between 256 and 2432. Preamble Preamble is used to signal that data is coming to the receiver. Short preamble increases performance as less time sending preamble means more time for sending data. All IEEE 802.11b compliant wireless adapters support long preamble, but not all support short preamble. Select Long preamble if you are unsure what preamble mode the wireless adapters support, and to provide more reliable communications in busy wireless networks. Select Short preamble if you are sure the wireless adapters support it, and to provide more efficient communications.Note: The Prestige and the wireless stations MUST use the same preamble mode in order to communicate.802.11 Mode Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to associate with the Prestige.Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to associate with the Prestige.Select Mixed to allow either IEEE802.11b or IEEE802.11g compliant WLAN devices to associate with the Prestige. The transmission rate of your Prestige might be reduced.
P-320W User’s GuideChapter 4 Wireless LAN 79Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to reload the previous configuration for this screen.Table 28 Wireless: AdvancedLABEL DESCRIPTION
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P-320W User’s GuideChapter 5 WAN 81CHAPTER 5WANThis chapter describes how to configure WAN settings.5.1 WAN IP Address AssignmentEvery computer on the Internet must have a unique IP address. If your networks are isolated from the Internet, for instance, only between your two branch offices, you can assign any IP addresses to the hosts without problems. However, the Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of IP addresses specifically for private networks.Table 29 Private IP Address Ranges10.0.0.0 -10.255.255.255172.16.0.0 -172.31.255.255192.168.0.0 -192.168.255.255You can obtain your IP address from the IANA, from an ISP or have it assigned by a private network. If you belong to a small organization and your Internet access is through an ISP, the ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addresses.Note: Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space.5.2 IP Address and Subnet MaskSimilar to the way houses on a street share a common street name, so too do computers on a LAN share one common network number.Where you obtain your network number depends on your particular situation. If the ISP or your network administrator assigns you a block of registered IP addresses, follow their instructions in selecting the IP addresses and the subnet mask.
P-320W User’s Guide82 Chapter 5 WANIf the ISP did not explicitly give you an IP network number, then most likely you have a single user account and the ISP will assign you a dynamic IP address when the connection is established. The Internet Assigned Number Authority (IANA) reserved this block of addresses specifically for private use; please do not use any other number unless you are told otherwise. Let's say you select 192.168.1.0 as the network number; which covers 254 individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other words, the first three numbers specify the network number while the last number identifies an individual computer on that network.Once you have decided on the network number, pick an IP address that is easy to remember, for instance, 192.168.1.1, for your Prestige, but make sure that no other device on your network is using that IP address.The subnet mask specifies the network number portion of an IP address. Your Prestige will compute the subnet mask automatically based on the IP address that you entered. You don't need to change the subnet mask computed by the Prestige unless you are instructed to do otherwise.5.3 DNS Server Address AssignmentUse DNS (Domain Name System) to map a domain name to its corresponding IP address and vice versa, for instance, the IP address of www.zyxel.com is 204.217.0.2. The DNS server is extremely important because without it, you must know the IP address of a computer before you can access it. The Prestige can get the DNS server addresses in the following way.1The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up. If your ISP gives you DNS server addresses, enter them in the DNS Server fields in DHCP Setup.If the ISP did not give you DNS server information, leave the DNS Server fields in DHCP Setup set to 0.0.0.0 for the ISP to dynamically assign the DNS server IP addresses.5.4 TCP/IP Priority (Metric)The metric represents the "cost of transmission". A router determines the best route for transmission by choosing a path with the lowest "cost". RIP routing uses hop count as the measurement of cost, with a minimum of "1" for directly connected networks. The number must be between "1" and "15"; a number greater than "15" means the link is down. The smaller the number, the lower the "cost".The metric sets the priority for the Prestige’s routes to the Internet. If the routes have the same metric, the Prestige uses the following pre-defined priorities:1WAN: designated by the ISP or a static route (see Chapter 10 on page 115)
P-320W User’s GuideChapter 5 WAN 832Traffic Redirect (see Section 5.9 on page 90)For example, if WA N has a metric of "1" and Traffic Redirect has a metric of "2", the WA N connection acts as the primary default route. If the WA N route fails to connect to the Internet, the Prestige tries Traffic Redirect next.5.5 WAN MAC AddressEvery Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00-A0-C5-00-00-02.You can configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN. Once it is successfully configured, the address will be copied to the "rom" file (ZyNOS configuration file). It will not change unless you change the setting or upload a different "rom" file.Table 30 Example of Network Properties for LAN Servers with Fixed IP AddressesChoose an IP address 192.168.1.2-192.168.1.32; 192.168.1.65-192.168.1.254.Subnet mask 255.255.255.0Gateway (or default route) 192.168.1.1(Prestige LAN IP)5.6 Internet ConnectionTo change your Prestige’s WAN ISP, IP and MAC settings, click WA N under Network. The screen differs by the encapsulation.5.6.1 Ethernet EncapsulationThe screen shown next is for Ethernet encapsulation.
P-320W User’s Guide84 Chapter 5 WANFigure 44 WAN: Ethernet EncapsulationThe following table describes the labels in this screen.Table 31 WAN: Ethernet EncapsulationLABEL DESCRIPTIONEncapsulation You must choose the Ethernet option when the WAN port is used as a regular Ethernet.Service Type Choose from Standard, Telstra (RoadRunner Telstra authentication method), RR-Manager (Roadrunner Manager authentication method), RR-Toshiba (Roadrunner Toshiba authentication method) or Telia Login. The following fields do not appear with the Standard service type.WAN IP Address Assignment Get automatically from ISP Select this option If your ISP did not assign you a fixed IP address. This is the default selection. Use fixed IP addressSelect this option If the ISP assigned a fixed IP address. IP Address Enter your WAN IP address in this field if you selected Use Fixed IP Address. Remote IP Subnet MaskEnter the Remote IP Subnet Mask (if your ISP gave you one) in this field.Backup Gateway IP AddressEnter a Backup Gateway IP Address (if your ISP gave you one) in this field.WAN MAC Address
P-320W User’s GuideChapter 5 WAN 855.6.2 PPPoE EncapsulationThe Prestige supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF standard (RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (DSL, cable, wireless, etc.) connection. The PPP over Ethernet option is for a dial-up connection using PPPoE.For the service provider, PPPoE offers an access and authentication method that works with existing access control systems (for example RADIUS).One of the benefits of PPPoE is the ability to let you access one of multiple network services, a function known as dynamic service selection. This enables the service provider to easily create and offer new IP services for individuals.Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no specific configuration of the broadband modem at the customer site.By implementing PPPoE directly on the Prestige (rather than individual computers), the computers on the LAN do not need PPPoE software installed, since the Prestige does that part of the task. Furthermore, with NAT, all of the LANs’ computers will have access.The screen shown next is for PPPoE encapsulation.Spoof WAN MAC AddressThe MAC address section allows users to configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN. Clear the check box to use the factory assigned default MAC Address.Select this option and and click Clone MAC to clone the MAC address in the MAC Address field.Clone MAC addressEnter the MAC address of the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the address will be copied to the rom file (ZyNOS configuration file). It will not change unless you change the setting or upload a different ROM file. Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.Table 31 WAN: Ethernet EncapsulationLABEL DESCRIPTION
P-320W User’s Guide86 Chapter 5 WANFigure 45 WAN: PPPoE EncapsulationThe following table describes the labels in this screen.Table 32 WAN: PPPoE EncapsulationLABEL DESCRIPTIONISP Parameters for Internet AccessEncapsulation The PPP over Ethernet choice is for a dial-up connection using PPPoE. The Prestige supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF standard (RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (i.e. xDSL, cable, wireless, etc.) connection. Operationally, PPPoE saves significant effort for both the end user and ISP/carrier, as it requires no specific configuration of the broadband modem at the customer site. By implementing PPPoE directly on the router rather than individual computers, the computers on the LAN do not need PPPoE software installed, since the router does that part of the task. Further, with NAT, all of the LAN's computers will have access.Service Name Type the PPPoE service name provided to you. PPPoE uses a service name to identify and reach the PPPoE server.User Name Type the User Name given to you by your ISP. Password Type the password associated with the User Name above.Retype to Confirm Type your password again to make sure that you have entered is correctly. Nailed-Up ConnectionSelect Nailed-Up Connection if you do not want the connection to time out.
P-320W User’s GuideChapter 5 WAN 875.6.3 PPTP EncapsulationPoint-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure transfer of data from a remote client to a private server, creating a Virtual Private Network (VPN) using TCP/IP-based networks.PPTP supports on-demand, multi-protocol and virtual private networking over public networks, such as the Internet.The screen shown next is for PPTP encapsulation.Idle Timeout This value specifies the time in seconds that elapses before the router automatically disconnects from the PPPoE server.WAN IP Address Assignment Get automatically from ISP Select this option If your ISP did not assign you a fixed IP address. This is the default selection. Use fixed IP addressSelect this option If the ISP assigned a fixed IP address. My WAN IP AddressEnter your WAN IP address in this field if you selected Use Fixed IP Address. Remote IP AddressEnter the Remote IP Address (if your ISP gave you one) in this field.Remote IP Subnet MaskEnter the Rmote IP subnet Mask in this field.WAN MAC AddressSpoof WAN MAC AddressThe MAC address section allows users to configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN. Clear the check box to use the factory assigned default MAC Address.Select this option and and click Clone MAC to clone the MAC address in the MAC Address field.Clone MAC addressEnter the MAC address of the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the address will be copied to the rom file (ZyNOS configuration file). It will not change unless you change the setting or upload a different ROM file. Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.Table 32 WAN: PPPoE EncapsulationLABEL DESCRIPTION
P-320W User’s Guide88 Chapter 5 WANFigure 46 PPTP EncapsulationThe following table describes the labels in this screen.Table 33 PPTP EncapsulationLABEL DESCRIPTIONISP Parameters for Internet AccessEncapsulation Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure transfer of data from a remote client to a private server, creating a Virtual Private Network (VPN) using TCP/IP-based networks. PPTP supports on-demand, multi-protocol, and virtual private networking over public networks, such as the Internet. The Prestige supports only one PPTP server connection at any given time. To configure a PPTP client, you must configure the User Name and Password fields for a PPP connection and the PPTP parameters for a PPTP connection.User Name Type the user name given to you by your ISP.
P-320W User’s GuideChapter 5 WAN 895.7 Advanced WAN ScreenTo change your Prestige’s advanced WAN settings, click the WA N link under Network, and the Advanced tab. The screen appears as shown.Password Type the password associated with the User Name above.Retype to Confirm Type your password again to make sure that you have entered is correctly. Nailed-up Connection Select Nailed-Up Connection if you do not want the connection to time out.Idle Timeout This value specifies the time in seconds that elapses before the Prestige automatically disconnects from the PPTP server.PPTP ConfigurationGet automatically from ISP Select this option If your ISP did not assign you a fixed IP address. This is the default selection. Use fixed IP address Select this option If the ISP assigned a fixed IP address. My IP Address Type the (static) IP address assigned to you by your ISP.My IP Subnet Mask Your Prestige will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the subnet mask computed by the Prestige.Server IP Address Type the IP address of the PPTP server.Connection ID/NameType your identification name for the PPTP server.WAN IP Address Assignment Get automatically from ISP Select this option If your ISP did not assign you a fixed IP address. This is the default selection. Use fixed IP address Select this option If the ISP assigned a fixed IP address. My WAN IP AddressEnter your WAN IP address in this field if you selected Use Fixed IP Address. Remote IP Address Enter the Remote IP Address (if your ISP gave you one) in this field.Remote IP Subnet MaskEnter the Rmote IP subnet Mask in this field.WAN MAC AddressSpoof WAN MAC AddressThe MAC address section allows users to configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN. Clear the check box to use the factory assigned default MAC Address.Select this option and and click Clone MAC to clone the MAC address in the MAC Address field.Clone MAC address Enter the MAC address of the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the address will be copied to the rom file (ZyNOS configuration file). It will not change unless you change the setting or upload a different ROM file. Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.Table 33 PPTP EncapsulationLABEL DESCRIPTION
P-320W User’s Guide90 Chapter 5 WANFigure 47 AdvancedThe following table describes the labels in this screen.Table 34 AdvancedLABEL DESCRIPTIONDNS ServersFirst DNS ServerSecond DNS ServerEnter the IP address(es) of the DNS server(s). If you do not configure a DNS server, you must know the IP address of a computer in order to access it.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.5.8 Traffic RedirectTraffic redirect forwards WAN traffic to a backup gateway when the Prestige cannot connect to the Internet through its normal gateway. Connect the backup gateway on the WAN so that the Prestige still provides firewall protection.Figure 48 Traffic Redirect WAN Setup5.9 Traffic Redirect ScreenTo change your Prestige’s Traffic Redirect settings, click the WAN link under Network and the Traffic Redirect tab. The screen appears as shown.
P-320W User’s GuideChapter 5 WAN 91Figure 49 WAN: Traffic RedirectThe following table describes the labels in this screen.Table 35 Traffic RedirectLABEL DESCRIPTIONActive Select this check box to have the Prestige use traffic redirect if the normal WAN connection goes down.Backup Gateway IP AddressType the IP address of your backup gateway in dotted decimal notation. The Prestige automatically forwards traffic to this IP address if the Prestige's Internet connection terminates. Check WAN IP AddressConfiguration of this field is optional. If you do not enter an IP address here, the Prestige will use the default gateway IP address. Configure this field to test your Prestige's WAN accessibility. Type the IP address of a reliable nearby computer (for example, your ISP's DNS server address). If you are using PPTP or PPPoE Encapsulation, type "0.0.0.0" to configure the Prestige to check the PVC (Permanent Virtual Circuit) or PPTP tunnel.Fail Tolerance Type the number of times your Prestige may attempt and fail to connect to the Internet before traffic is forwarded to the backup gateway.Period (seconds)Type the number of seconds for the Prestige to wait between checks to see if it can connect to the WAN IP address (Check WAN IP Address field) or default gateway. Allow more time if your destination IP address handles lots of traffic.Timeout (seconds)Type the number of seconds for your Prestige to wait for a ping response from the IP Address in the Check WAN IP Address field before it times out. The WAN connection is considered "down" after the Prestige times out the number of times specified in the Fail Tolerance field. Use a higher value in this field if your network is busy or congested.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.
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P-320W User’s GuideChapter 6 LAN 93CHAPTER 6LAN This chapter describes how to configure LAN settings.6.1 LAN OverviewLocal Area Network (LAN) is a shared communication system to which many computers are attached. The LAN screens can help you configure a LAN DHCP server, manage IP addresses, and partition your physical network into logical networks. 6.1.1 IP Pool SetupThe Prestige is pre-configured with a pool of 32 IP addresses starting from 192.168.1.33 to 192.168.1.64. This configuration leaves 31 IP addresses (excluding the Prestige itself) in the lower range for other server computers, for instance, servers for mail, FTP, TFTP, web, etc., that you may have.6.1.2 System DNS ServersRefer to the IP Address and Subnet Mask section in the Wizard Connection chapter.6.2 LAN TCP/IP The Prestige has built-in DHCP server capability that assigns IP addresses and DNS servers to systems that support DHCP client capability.6.2.1 Factory LAN DefaultsThe LAN parameters of the Prestige are preset in the factory with the following values:• IP address of 192.168.1.1 with subnet mask of 255.255.255.0 (24 bits)• DHCP server enabled with 32 client IP addresses starting from 192.168.1.33. These parameters should work for the majority of installations. If your ISP gives you explicit DNS server address(es), read the embedded web configurator help regarding what fields need to be configured.
P-320W User’s Guide94 Chapter 6 LAN6.2.2 IP Address and Subnet MaskRefer to the section about IP address and subnet mask in the Wizard Setup chapter for this information.6.3 IP ScreenClick the LAN link under Network to open the IP screen.Figure 50 LAN IPThe following table describes the labels in this screen.Table 36 LAN IPLABEL DESCRIPTIONLAN TCP/IPIP Address Type the IP address of your Prestige in dotted decimal notation 192.168.1.1 (factory default).IP Subnet Mask The subnet mask specifies the network number portion of an IP address. Your Prestige will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the subnet mask computed by the Prestige 255.255.255.0.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.
P-320W User’s GuideChapter 7 DHCP Server 95CHAPTER 7DHCP Server7.1 DHCPDHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to obtain TCP/IP configuration at start-up from a server. You can configure the Prestige as a DHCP server or disable it. When configured as a server, the Prestige provides the TCP/IP configuration for the clients. If DHCP service is disabled, you must have another DHCP server on your LAN, or else the computer must be manually configured.7.2 DHCP ScreenClick the DHCP Server link under Network and the General tab. The following screen displays.Figure 51 General
P-320W User’s Guide96 Chapter 7 DHCP ServerThe following table describes the labels in this screen.Table 37 GeneralLABEL DESCRIPTIONEnable DHCP Server DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients (computers) to obtain TCP/IP configuration at startup from a server. Leave the Enable DHCP Server check box selected unless your ISP instructs you to do otherwise. Clear it to disable the Prestige acting as a DHCP server. When configured as a server, the Prestige provides TCP/IP configuration for the clients. If not, DHCP service is disabled and you must have another DHCP server on your LAN, or else the computers must be manually configured. When set as a server, fill in the following four fields.IP Pool Starting AddressThis field specifies the first of the contiguous addresses in the IP address pool.Pool Size This field specifies the size, or count of the IP address pool.DNS Servers Assigned by DHCP Server The Prestige passes a DNS (Domain Name System) server IP address (in the order you specify here) to the DHCP clients. The Prestige only passes this information to the LAN DHCP clients when you select the Enable DHCP Server check box. When you clear the Enable DHCP Server check box, DHCP service is disabled and you must have another DHCP sever on your LAN, or else the computers must have their DNS server addresses manually configured.First DNS ServerSecond DNS ServerEnter the IP address(es) of the DNS server(s). If you do not configure a DNS server, you must know the IP address of a computer in order to access it.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.7.3 Static DHCP ScreenThis table allows you to assign IP addresses on the LAN to specific individual computers based on their MAC addresses. Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00-A0-C5-00-00-02.To change your Prestige’s Static DHCP settings, click the DHCP Server link under Network and the Static DHCP tab. The following screen displays.
P-320W User’s GuideChapter 7 DHCP Server 97Figure 52 Static DHCPThe following table describes the labels in this screen.Table 38 Static DHCPLABEL DESCRIPTION#This is the index number of the Static IP table entry (row).MAC Address Type the MAC address (with colons) of a computer on your LAN.IP Address Type the LAN IP address of a computer on your LAN.Apply Click Apply to save your changes back to the Prestige.Reset Click Reset to begin configuring this screen afresh.7.4 Client List ScreenThe DHCP table shows current DHCP client information (including IP Address, Host Name and MAC Address) of all network clients using the Prestige’s DHCP server.Configure this screen to always assign an IP address to a MAC address (and host name). Click the DHCP Server link under Network and the Client List tab. Note: You can also view a read-only client list by clicking the DHCP Table (Detail) hyperlink in the Status screen. The following screen displays.
P-320W User’s Guide98 Chapter 7 DHCP ServerFigure 53 Client ListThe following table describes the labels in this screen.Table 39 Client ListLABEL DESCRIPTION# This is the index number of the host computer. IP Address This field displays the IP address relative to the # field listed above.Host Name This field displays the computer host name.MAC Address The MAC (Media Access Control) or Ethernet address on a LAN (Local Area Network) is unique to your computer (six pairs of hexadecimal notation).A network interface card such as an Ethernet adapter has a hardwired address that is assigned at the factory. This address follows an industry standard that ensures no other adapter has a similar address.Reserve Select this check box to have the Prestige always assign this IP address to this MAC address (and host name). You can select up to 8 entries in this table. After you click Apply, the MAC address and IP address also display in the Static DHCP screen (where you can edit them).Apply Click Apply to save your changes back to the Prestige.Refresh Click Refresh to reload the DHCP table.
P-320W User’s GuideChapter 8 Network Address Translation (NAT) 99CHAPTER 8Network Address Translation (NAT) This chapter discusses how to configure NAT on the Prestige.8.1 NAT OverviewNAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet. For example, the source address of an outgoing packet, used within one network is changed to a different IP address known within another network.8.1.1 NAT DefinitionsInside/outside denotes where a host is located relative to the Prestige. For example, the computers of your subscribers are the inside hosts, while the web servers on the Internet are the outside hosts. Global/local denotes the IP address of a host in a packet as the packet traverses a router. For example, the local address refers to the IP address of a host when the packet is in the local network, while the global address refers to the IP address of the host when the same packet is traveling in the WAN side. Note that inside/outside refers to the location of a host, while global/local refers to the IP address of a host used in a packet. Thus, an inside local address (ILA) is the IP address of an inside host in a packet when the packet is still in the local network, while an inside global address (IGA) is the IP address of the same inside host when the packet is on the WAN side. The following table summarizes this information.
Table 40 NAT DefinitionsTERM DESCRIPTIONInside This refers to the host on the LAN.Outside This refers to the host on the WAN.Local This refers to the packet address (source or destination) as the packet travels on the LAN.Global This refers to the packet address (source or destination) as the packet travels on the WAN.P-320W User’s Guide100 Chapter 8 Network Address Translation (NAT)Note: NAT never changes the IP address (either local or global) of an outside host.8.1.2 What NAT DoesIn the simplest form, NAT changes the source IP address in a packet received from a subscriber (the inside local address) to another (the inside global address) before forwarding the packet to the WAN side. When the response comes back, NAT translates the destination address (the inside global address) back to the inside local address before forwarding it to the original inside host. Note that the IP address (either local or global) of an outside host is never changed.The global IP addresses for the inside hosts can be either static or dynamically assigned by the ISP. In addition, you can designate servers (for example a web server and a telnet server) on your local network and make them accessible to the outside world. If you do not define any servers (for Many-to-One and Many-to-Many Overload mapping), NAT offers the additional benefit of firewall protection. With no servers defined, your Prestige filters out all incoming inquiries, thus preventing intruders from probing your network. For more information on IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT).8.1.3 How NAT WorksEach packet has two addresses – a source address and a destination address. For outgoing packets, the ILA (Inside Local Address) is the source address on the LAN, and the IGA (Inside Global Address) is the source address on the WAN. For incoming packets, the ILA is the destination address on the LAN, and the IGA is the destination address on the WAN. NAT maps private (local) IP addresses to globally unique ones required for communication with hosts on other networks. It replaces the original IP source address (and TCP or UDP source port numbers for Many-to-One and Many-to-Many Overload NAT mapping) in each packet and then forwards it to the Internet. The Prestige keeps track of the original addresses and port numbers so incoming reply packets can have their original values restored. The following figure illustrates this.

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