I'm having some trouble getting a site-to-site vpn setup between a pix 515 running 6.3(5) and a sonicwall. We've verified the phase1&2 settings and reset the pre-shared key. On the sonicwall they are getting a message stating that the pix doesn't support nat traversal. I didn't have it on at first, so I turned it on. But it didn't help the issue. Has anyone seen this issue with the sonicwall's? When I run a debug on the pix side and generate traffic I get an error message stating unauthenticated SA.