greetings list, I'm having a problem with a particular online game, winning eleven soccer 8. I need some kind of udp connection tracking and non of the helper modules seem to help. Firstly I'll describe what happens during the initial connection between the server and client: 1.) first the client will choose any random port over 1064 to use for the outgoing connection, lets use 1379 for this example. 2.) the client will send a udp packet from port 1379 to the listening port on the server which is always 5739. 3.) the server receives the packet, then chooses a random available port of its own, lets use 1184 for this example. 4.) the server sends a single udp packet with a src port of 1184 to the dst port 1379 of the client. 5.) after this single packet described in step 4, all the traffic between the client and server happen between ports 2222 and 5739. Here is an illustrated example IP CLIENT.1379 > HOST.5739: UDP, length: 64 IP HOST.1184 > CLIENT.1379: UDP, length: 84 ** this is the troublesome packet ** IP HOST.5739 > CLIENT.1379: UDP, length: 60 IP HOST.5739 > CLIENT.1379: UDP, length: 60 IP CLIENT.1379 > HOST.5739: UDP, length: 60 IP HOST.5739 > CLIENT.1379: UDP, length: 60 IP CLIENT.1379 > HOST.5739: UDP, length: 16 IP HOST.5739 > CLIENT.1379: UDP, length: 60 IP CLIENT.1379 > HOST.5739: UDP, length: 60 IP HOST.5739 > CLIENT.1379: UDP, length: 60 IP CLIENT.1379 > HOST.5739: UDP, length: 60 Now, my problem is when i want to connect as a client, i have no way of knowing what port the server will choose to send that single packet (step 4 above). I also can't guess what port my client will use (step 1 above). All the other packets are fine because i can always expect a src or dst port with 5739. This single packet is causing all my connection attempts to fail. Is there anything i can try besides forwarding all udp traffic to the client? Thank you, steve
