Can I configure "Twice NAT" on a NSA2400

jsbalabon

I have multiple customer site to site VPNs and I am running into a situation where I have overlapping subnets. On most of these connecitons I would only be able to modify my sides configuration. All of the searching I have done seems to point at setting up a Twice NAT. I am just curious if this is possible on the NSA Firewalls and how I would go about it.

TKWITS

https://www.sonicwall.com/support/knowledge-base/how-can-i-configure-nat-over-vpn-in-a-site-to-site-vpn/170515155805172/

For those playing along "Twice NAT" simply means both the local and remote subnets are translated.

Considering you have an older device the following KB article may be of more use.

https://www.sonicwall.com/support/knowledge-base/how-can-i-configure-a-site-to-site-vpn-with-multiple-network-overlaps-nat-over-vpn/170817123531353/

jsbalabon

This is what I was seeing as well. Thank you so much for responding. One additional question, these instructions talk about configuring "Site B" In my case some of these sites I won't have access to make changes on the other side. Is this going to be an issue?

TKWITS

The short answer is yes it will be an issue for "Twice NAT".