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VPN with dynamic address

I have a router at my central location that I am using to terminate my GRE tunnels. A few of my remote locations are serviced by DSL and do not have static IP Address.

Is there a way to use IKE or any other technology to establish a tunnel between the two routers? One with a dynamic address and one static. Thanks

1 REPLY
Cisco Employee

Re: VPN with dynamic address

Yes you could use something like a wild pre-shared keys on the central router as illustrated on:

http://www.cisco.com/warp/customer/707/wild_no_mode.html

Then the remote routers doing negotiated ip addresses would be configured as a normal lan to lan ipsec pointing to the central router as the peer.

Something like:

http://www.cisco.com/warp/customer/707/ios_804.html

The only catch on this is that the only ones who could initiate the ipsec tunnel are the remote peers as the central router basically doesn't know its peers.

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