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Hello, I'm trying out winroute firewall and it's pretty good, however I think I have a simple problem with a complicated background around it and - I hope - a simple solution to it.

Ok, we have this quake3 linux server. Easy I thought, I'll do the portmapping and everything's set. But it wasn't that simple.

It works like this:
- Game server inside the LAN over NAT, sends UDP packet with an originating source port.
- "Master" game server (that server is remote and lists the game servers) gets that UDP packet, reads the port from the source port of the packet and "announces" the server's existence from that port.

Yes, unless I'm terribly mistaken, this is the only way those master servers get the ports of the game servers.

So, I noticed this, that the master server lists a random port. "Random port" I thought, "how did it think that?".

So, again unless I'm totally mistaken what happens is this:

For security reasons or other reasons, Winroute gets the packet from the NAT'ed computer inside the LAN and along the way, at the time it changes the packet's IP address to the external interface, it changes its port to something random.

Am I right? Is there a solution to it? I'm like two days on this problem and it drives me mad. I'm sure there's a solution.

Thanks very much for any help you may provide.


ps. All the portmapping from outside->in is OK, I've done it already with other servers that run on that same NAT'ed computer in the LAN and no problems with them. And inside->out is OK too, I don't block anything anyway.


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je people. still the same issue?
im in serious need for such, the secret is called
"disable source port mapping"
and the effect is that the gameservers dont show up in masterlists.
cause master recognize gameserver port through "heartbeat" packets source port.

gg seea

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