Question : IPSec VPN Issue

This one has me stumped so I'll try to explain it as best I can...

I have two eSoft Instagate 806 firewall appliances hooked together via an ipSec VPN through the built in interface.  When I attempt to connect to a specific IP address on LAN 2 from LAN1 one I can only access that IP address from one PC on LAN1.  For example LAN1 PC 1 IP is 192.168.3.10 and PC 2 is 192.168.3.11.  The address I am trying to connect to on LAN2 is 192.168.7.10.  PC1 can connect to 192.168.7.10 with no issue, PC 2 cannot.  PC 2 does not receive a response on PING and times out on a tracert command.  However PC2 can ping and tracert every other IP in the 192.168.7.0 network without issue(192.168.7.25, 192.168.7.26, etc.).  I see nothing in the firewall logs that would be causing this problem.  I have checked, re-checked and verified the network connection settings on each device and all seem fine.  I'm sure it's something stupid that I have missed but I am out of ideas.  To complicate things further I have an additional 6 Instagate devices connected via ipSec and every one of them will connect to this IP without issue.  Any thoughts would be appreciated.

Answer : IPSec VPN Issue

Well next check your NAT and IPSec tunnel rules to make sure that PC2 is excluded from NAT when going to LAN 2. and that PC2 is included in the traffic going across the tunnel.