We have a SonicWall with an IPSec tunnel that uses two WAN IP's - one that makes the connection and one that is the "local IP" for the connection. All traffic over this tunnel from the machines behind the SonicWall are NAT'd to the 2nd WAN IP and the IPSec tunnel goes out the first WAN IP.

We'd like to replace this SonicWall with an Untangle. If I set the Local Network field in the IPSec tunnel to the 2nd WAN IP, and then create a NAT rule for all traffic destined for the IPSec remote site to use the 2nd WAN IP, would this work?

Just trying to figure out if this configuration is even supported.