3Com OfficeConnect 3C100XF Cli User's Manual

Also see for OfficeConnect 3C100XF: Quick start guide

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3Com OfficeConnect 3C100XF Cli User's Manual Manual pdf 179 page image

Network Address Translation (NAT) 21-3If there is no static NAT policy and a default workstation is set, then unknownincoming traffic will go to the default workstation. If the incoming NetMeeting callis not intended for the default workstation, then it will not work.The following example describes a scenario on how to set up an incomingNetMeeting call correctly:1) If the user kept the default NAT settings (the default is SuperNat) and if the localworkstation that initiated the tunnel is the one that is expecting a NetMeeting callfrom the remote side, and also the one that is listed in the default static NATpolicy, then the incoming call from the remote side will get directed to theintended workstation.If any other local workstation initiated the tunnel, the incoming call from theremote side will never be received by the intended workstation.You can change the NAT option in the default NAT policy by entering thefollowing CLI commands:OCG-Adsl>> set tunnel <name> protocol ip workstation<intended local workstation address>OCG-Adsl>> set tunnel <name> protocol ip nat_option patTo verify that the workstation intended to receive the call is set, enter thefollowing CLI command:OCG-Adsl>> show nat policy default_pptp:6_nat interface pptp:6Configuring NetworkAddress Translation(NAT)When Network Address Translation is configured, static mappings and/or dynamicpools of addresses must be configured. Static assignments permanently map aprivate address to a public address. Dynamic pools consist of a start IP address, andan end IP address. Multiple pools can be assigned and static assignments may existwithin a pools range.Policy Name: default_pptp:6_natInterface Name: pptp:6Public Start Address: 90.0.0.103 (Note: This is the public addressthat needs to be pinged.)Public End Address: 90.0.0.103Public Net Mask: 0.0.0.0Private Start Address: 85.85.85.200 (Note: used for verification.)Private End Address: 85.85.85.200 (Note: used for verification.)Private Net Mask: 0.0.0.0NAT translation Type: NAT STATIC