Site to site not passing traffic

[johndball]

I connected a UT10 client to UT9.4 server.
The UT10 connects to UT9.4 I can ping the boxes from the boxes. I can't ping the boxes from clients on the same subnet or on different subnets.
The networks are exported.
I rebooted the UT9.4 server and reconnected the 10 client and still no traffic is passing.
Internal interface on 10 is NAT traffic on this interface.
Firewall module shows traffic trying to pass through as allowed.
What am I missing in UT10?

[jcoffin]

By default, Only the external interfaces should have "NAT traffic exiting this interface" checked. If you also have that feature checked on the internal interfaces, then it could be your issue.

[johndball]

It is now corrected.
So this might be moving outside of a VPN issue and into a networking issue.

I'm still confused as to some of the 10 NAT'ing. After changing the setting to not NAT internal, I still can't hit traffic on either side of the VPN from clients. Boxes are able to ping each other.
The UT10 box is unable to ping the internal clients' IP addresses as well.

Edit: I'm going to move this to networking. By move I mean make a new thread.