Any Cisco experts here? Help needed

busbyuk

busbyuk

busbyuk

Associate
Joined
20 Mar 2010
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66
Hi All, I'm sure there must be some Cisco experts here who may be able to help me with my below issue:

I have a Cisco 1941 which has several Cisco VPN clients connecting to it which all works fine. The details of the LAN and VPN clients are as below:

Cisco 1941 LAN : 172.16.1.0 255.255.255.0
VPN Clients : 192.168.5.0 255.255.255.0

As mentioned this works fine but I'm about to setup a point to point VPN with from the above Cisco to another site which isn't controlled by myself and the remote side of this point to point VPN will only allow connections from the "172.16.1.0" subnet to communicate with it.

The issue I have is that the Cisco VPN clients also need to communicate with the remote side of this point to point VPN but they are obviously coming from the "192.168.5.0" subnet. Is this possible and if so if anyone can offer advise on where to start with this that would be fantastic.

Thanks

Andy
 
Create a new point to point for the 192.168.5.x range.
Click to expand...

As mentioned the remote end will only accept traffic from the "172.16.1.0" range so it cannot come from 192.168.5.x.

Use NAT?
Click to expand...

This is what I have been looking at. The Cisco 1941 is obviously using NAT already for the internal LAN, so I've been looking at the possiblility of setting up a seperate NAT translation specifically for this. I guess I would setup a seperate routemap for this.

I'm just not sure if it will work due to the order that Cisco deals with traffic. Worth a try though.
 
Have you not got someone over the other end you can talk to, to create the new point to point?

Regarding the NAt, it could have an access-list of allowed IP's that will get Translated. Just add the 192.168.5.x range to the access-list.
 
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