VPN client with counterpart on secondary ip address on the public interface of the router

Hello

On our office LAN, we have a Linux server than it hosting a VPN connection to a remote client.

Do this to ISAKMP card on our Cisco router port connections to the internal ip address of the Linux host.

However, we now want to allow our users to establish VPN connections to our local network using the unit of Cisco VPN Client.

Of course, this would present challenges, as the ISAKMP our router port is mapped through an internal host.

So, we tried to set up a secondary ip address on the router and VPN clients to connect to that.

What we see in our newspapers is as follows:

Phase 1 is very well established, and the VPN Client prompts the user for a user name and password.

Authentication of the phase 2 starts, but the router says it's is not to receive a proposal of hash of the client.

185 12:18:06.943 09/03/11 Sev = Info/4 IKE / 0 x 63000014
RECEIVING< isakmp="" oak="" info="" *(hash,="" notify:no_proposal_chosen)="" from="">

(in this case, where x.x.x.x is the secondary ip address on the public interface)

After that, the Phase 1 SA is removed and the connection fails.

My understanding is that the Phase 2 negotiation takes place with the ip address assigned to the client in Phase 1, which suggests that the problem occurs because the client communicates with the main on the interface ip address, and no secondary ip address.

When remove us the mapping of port isakmp and the VPN client to connect to the primary ip address, everything works fine.

Question:

It is possible to establish 2 router VPN Client uses a secondary ip address?

If not, is there some way I can implement the port mapping so that it occurs, the connection comes from a specific ip address?

Garreth

Should be supported on IOS.

The command is crypto ctcp port...

Check this link:

http://www.Cisco.com/en/us/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps6659/prod_white_paper0900aecd8061e2b3.html

Federico.

Tags: Cisco Security

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