I would say that your states table needs reset. A firewall reboot would do this as well. On your advanced outbound NAT is should read something like this:
WAN 10.0.0.0/24 * * * "out.side.ip.addr" * NO Default Outbound NAT Let us know if that helps. Curtis LaMasters http://www.curtis-lamasters.com http://www.builtnetworks.com
