Cisco question...1720/DSL letting VPN through [Archive] - SpeedGuide.net Broadband Community

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YeOldeStonecat
08-21-02, 09:27 AM
I've not learned Cisco at all, but have setup a Windows VPN authentication behind routers before. At home, when I had my Netopia R910 router, to hit my NT server, I had to forward port 1723 to the NIC for VPN....and also allow IP type 47 GRE to pass through.

I setup a VPN server for a client who had a frac-T, behind a Cisco, hmmm, think it was a 2600 router running NAT, that the phone company had control over. Again, to allow VPN through, I asked them to forward port 1723, and allow IP type 47 GRE to pass through. I never had to configure the router, just asked them to do it.

Buddy of mine setup a SBS2000 server, running 2x NICs, with the WAN NIC behind a Cisco 1720 router. Does someone know, or can someone point to a link, where you go in the Cisco config to do this same thing? Forward the port he's done, but it's still not working, so I'm guessing you have to allow that IP type through also, like I had to on the other two.

greEd
08-21-02, 09:20 PM
The router should have been set with an access list (probably ip extended) such as:

router#access-list 101 permit tcp clientsip hostip eq 1723

As for the ip type, a switch of "permit ip" would allow any internet protocol. I would check the access-list and see what is configured already( router#show access-lists ). Get it and post it here.

regards,
greEd