AD Replication across IPSEC Tunnel

[kamal.patel]

I am trying to force AD Replication between 2 Windows 2003 servers across a VPN tunnel that has a 3015 and a netscreen as endpoints. The replication seems to work fine one way but not the other. The ports AD Replication uses are 1025+. We have tested Telnet with port 1025 for packet sniffing but it still does not work.

[vkapoor5]

Some firewalls will permit traffic to go in one direction and will block the same traffic in the opposite direction. May be this is causing the AD replication to be blocked in one direction. I would first check on the traffic filters on the 3015 and the firewall to see if the required TCP ports are free to go in the desired direction.