VPN site to Site with NAT and Port forwarding on a 871

Hello

Could someone please look at the config 871 router attached and tell me where I'm wrong!

VPNs all work, work, BUT anyone trying to connect to a port that is sent through the VPN port forwarding fails.

In the config attached Port 3389 (RDP) is sent to an internal server, if you connect to the external interface Internet connection is made and it works well, but if someone tries to connect to the IP address internal to that same server through VPN, it does not.

We've added commands to stop working on the lines VPN NAT, but these do not seem to work.

What Miss me?

Thank you in advance and I will adjudicate all useful responses.

It is a common problem. Yes you added controls to prevent NAT to work above the tunnel, but your static nat port to port 3389 takes precedence over the generic nat command, and there not all orders top to prevent it is nat would be above the tunnel.

I wrote an example configuration for this some time, see here for more details:

http://www.Cisco.com/en/us/Tech/tk583/TK372/technologies_configuration_example09186a0080094634.shtml

If all goes well, he explains everything. Note that it is for a general order static host, not a static port that you have, but the concept is exactly the same. Just add a statement roadmap on the end of your static command of the port, and this route map - will reference an ACL that denies are used when going up above the tunnel.

Tags: Cisco Security

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