Destination NAT for Route base VPN

Gurupada — Fri, 12 Feb 2021 14:35:06 GMT

We have an requirement to set up a route base VPN, but remote proxy IP subnet clash with an existing remote subnet.

We are planning to use destination NAT, but not sure, how the routing will be controlled.

Please help to solve this problem.

Re: Destination NAT for Route base VPN

reaper — Mon, 15 Feb 2021 13:08:24 GMT

will the remote end participate in fixing the overlap? you could SNAT to a fictitious subnet on the tunnel and have the remote do DNAT for the incoming packets

your end would be connecting TO fictitious IPs and be source NATed inside that same fictitious subnet (you can attch it to the tunnel interface for ease of use)

the remote would be receiving connections to/from a fictitious subnet they'd need to destination nat to the appropriate servers

else you'll want to look into policy based forwarding as regular routing is applied after NAT and DNAT will be an issue in this case

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Destination NAT for Route base VPN

Re: Destination NAT for Route base VPN