I have tried looking, but is there any way to set the site-to-site config in Untangle as a responder only?
The remote site sits behind a CGNAT and Untangle would never be able to initiate a connection to it.
Not really sure yet that I can even get a tunnel up. But I still need to get the remote site set up for supporting nat on the IPSEC to test.
Just trying to think ahead.