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Some tips and tricks on the Cisco DSL modems. Useful for the SpecialOps team during installs.

Cisco 675/678

There are two forms of a CBOS port forwarding rule.

Open port 2222 on the WAN side and forwards it to the internal address.

  • # set nat entry add 2222 tcp

Open port 2222 on interface (this IP is made up-the rule we used had their real outside IP address) and forwards it to This rule worked (note: if the node has a dynamic IP these rules will break when the IP address changes)

  • # set nat entry add 2222 2222 tcp


CiscoDslModem (last edited 2007-11-23 18:03:56 by localhost)