i'm new here - so please bear with me.
I've got a running IPSec Connection betwenn two locations (Certs, 3DES, CryptoCard). I can ping any hosts at the remote site, but i can't access only some hosts. Same problem from the remote net to me.
The hosts i can't access seems to loose the packets except the first. I'm thinking this is a MTU problem. Turning on "Allow fragmented Packets" on "Advanced Settings" and Outbount Rules (LAN und IPSec Rules) won't make a change.
I'm using m0n0wall 1.3b9 on a PCEngines ALiX 2C3 Borad with Soekris Hardware Crypto Card.
Modem - m0n0wall
Modem - CISCO 1720 - m0n0wall
Forwarded/Allowed Ports on CISCO: UDP 500+4500, TCP 50+51, ESP
Have many thanks for your help!