I’m struggling with maintaining connections to Secondlife through RouterOS. The Secondlife wiki states:
Open outbound “session” access for UDP ports. Although UDP is a session-less transport, many firewalls block unsolicited incoming UDP traffic to a particular port unless it has seen recent outgoing UDP traffic from that same port.
After some investigation it seems that this is my problem - outgoing UDP connections to the Secondlife server (in this case to ports 13000-13050) are made, reciprocal UDP traffic returned between the same addresses:ports is however not being routed. The ‘Log Snaphot’ shows that traffic from the Secondlife server on Modem1 is dropped with no destination. The ‘Connection List’ shows that there is an outgoing connection between the same addresses and ports. I have Mangle rules for both outgoing and incoming traffic. However no packets are logged as being detected for the incoming traffic. I assume this can be done - suggestions as to how are welcome. I’m using Masquerade here, but I have the same symptoms whn using nat.
