Compex Technologies NetPassage 15B manual Introduction to Virtual Servers

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Chapter 3 Configuring NetPassage 15B

CAUTION

Disabling the NAT will cause your computers not being able to share the broadband Internet service. DO NOT disable the NAT unless you are certain on what you are doing.

Due to the translation, the computers behind the NAT are not reachable from the Internet. However, with the support of Virtual Server, you may host the Internet servers behind the NAT based on Port Forwarding or IP Forwarding.

3.3.1Introduction to Virtual Servers

Compex NetPassage 15B supports two types of Virtual Server, one based on Port Forwarding and the other based on IP Forwarding, where IP Forwarding option is only available when the WAN interface of NetPassage 15B has been configured with a static IP.

Virtual Server based on Port Forwarding

When Virtual Server based on Port Forwarding is implemented, Internet requests to the IP address of NetPassage 15B’s WAN interface will be forwarded to a specific computer in the private network based on the TCP port of the Internet request. Refer to Figure 3.3.1-1.

Figure 3.3.1-1

Virtual Server based on

Port Forwarding

Figure 3.3.1-1 shows two Virtual Servers implemented, HTTP Virtual Server and FTP Virtual Server. To implement the Virtual Server, you need to know the TCP port that the intended application is using.

For example, suppose that your ISP has assigned an IP address of 203.120.12.10 to your NetPassage 15B, and you wish to host a web server in your private network on a computer with an IP address of 192.168.168.10; you need to define a Virtual Server at TCP Port 80 (used by HTTP by default) to be forwarded to 192.168.168.10. Once implemented, all “http://203.120.12.10” requests will be forwarded to the computer with 192.168.168.10 IP address. If you wish to host another FTP server in your private network on a computer with an IP address of 192.168.168.20; you will then need to define a Virtual Server at TCP Port 21 (used by FTP by default) to be forwarded to 192.168.168.20.

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Contents Page Disclaimer Trademark InformationYour Feedback FCC Notice Declaration of ConformityCompex, Inc Technical Support InformationReadyLINK Networktechnology GmbH About this Document ConventionsTable of Contents NetPassage 15B’s System Tools Introduction Key FeaturesProduct Overview Broadband Internet SharingWeb-based Configuration Interface Integrated 4-port 10/100Mbps SwitchTime-based Access Management Parallel BroadbandPackage Contents Panel Views & Descriptions Panel ViewsIndex Indicator Description Panel DescriptionTechnical Data NetPassage 15B SpecificationsHardware Setup Getting Started192.168.168.1 TCP/IP Configuration of the ComputersFor Microsoft Windows 95/98/ME For Microsoft Windows 2000/XP 192.168.168.X Configuring your Computer with Static IP AddressNetmask 255.255.255.0 Subnet Mask 255.255.255.0 Gateway 192.168.168.1 DNS ServerSubnet Mask of 192.168.168.X and 255.255.255.0 respectively DNS Configuration Window Connecting to the Configuration Interface \WINDOWS\PINGCommand Menu Proxy SettingsConnecting to Web-based Configuration Interface Configuration WindowConnecting to NetPassage 15B’s Command Console via Telnet Telnet Command Console\WINDOWS\TELNET Command Console Login Configuring IP Addressing Configuring NetPassage 15BSetting up your LAN IP AddressAdvanced Option for Dhcp Server To reserve IP addresses for specific computersTo view the IP released by the Dhcp Server 5 titled Australia Big Pond Cable Internet 4 titled Singapore Singtel Magix SuperSurfCable Internet with Dynamic IP Assignment Cloning MAC Address to NetPassage 15B Cable Internet with Static IP Assignment Static IP Configuration Idle Timeout PasswordService Name UsernameUse non-standard Pppoe Singapore SingTel Magix SuperSurfReconnect Time Factor Ethernet typeNetwork Address Translator NAT Australia Big Pond Cable InternetIntroduction to Virtual Servers Virtual Server based on Port ForwardingVirtual Server based on IP Forwarding Defining Virtual Server based on De-Militarized Zone DMZDefining Virtual Server based on Port Forwarding Defining Virtual Server based on IP Forwarding Defining De- Militarized Zone Configuring Routing Protocol Static Routing Dynamic RoutingIP Packet Filtering Internet Application Filtering Activating Remote Router Management Managing NetPassage 15B from the InternetSelect Single from the drop down menu Http Port Telnet PortImplementing Parallel Broadband NetPassage 15B’s System Tools Setting Router IdentitySynchronizing Router’s Clock with your Computer Upgrading Router’s Firmware Profile Saving, Restore & Reset to Defaults Rebooting NetPassage 15BChanging Administrative Password Appendix a Console Commands Delete CommandDisconnect Command Enable CommandDisable Command Edit CommandSingapore Pacific Internet Broadband Appendix B ISP-Specific NotesSingapore SingNet Broadband Germany T-DSL & T-OnlineAppendix C Frequently Asked Questions Action Normal Reset Password to Reset to factoryProcedure for resetting password to default