VPN

Have a mono 1.233 to mono 1.233 IPSEC tunnel setup.  Logs all look good, SAD and SPF show the correct information but I cannot ping/browse across the tunnel.  Worked fine for months, then all the sudden stopped this morning...

Both are endpoints use Qwest DSL and can ping each other via public IP

Each of the endpoints work flawlessly connecting to a third test monowall behind a different ISP.

I've tried setting MTU to 1400 on each.

Any other suggestions?

Update:
Site A = 192.168.0.1
Site B = 10.0.0.1

From Site A using Diag > Ping/Tracert I can ping 10.0.0.1; however I can not ping/browse from any clients behind this mono
From Site B using Diag > Ping/Tracert when i try to ping 192.168.0.1 I get 100% Packet Loss