Need help with 2.x firewall and DirectPlay games

Need help with 2.x firewall and DirectPlay games

Post by Jack Twille » Tue, 08 Feb 2000 04:00:00

I've tried the ipmasqadm portfw rules references on several web sites
and they don't seem to help.  Packets seem to come and go, but the
test sessions just don't work.

My firewall is a Sparc running RedHat 6.1 with updates.  Is this the

Jack Twilley
jmt at twilley dot org
http colon slash slash www dot twilley dot org slash tilde jmt slash


1. Multiple hosts need IPnat port translation for Directplay games?

I am wondering how to do this...?

I have looked through all sorts of FAQs and gone through as many old
messages on as many old message boards as I could find with google, but
nothing seems to point it out to me.

Apologies for the newbieness. I hope you will bear with me.

I am a complete newbie at this and so am a bit hesitant to do any kernel
rebuilding at this stage.  Though a part of me is hoping that is the only
solution, cuz I really am enjoying the BSD experience and want to get deep
inside.  This means I have a GENERIC kernel OpenBSD 2.8 setup with ipnat
and ipf that connects directly to my broadband provider and provides ip
addresses via DHCP to all hosts in my private network.  

It works great.

The only thing is, I can't get into a game with any of the hosts within the
network.  Connection ports are as follows:

Initial TCP Connection 47624 Outbound 47624 Inbound
Subsequent TCP Inbound 2300-2400 2300-2400
Subsequent TCP Outbound 2300-2400 2300-2400
Subsequent UDP Inbound 2300-2400 2300-2400
Subsequent UDP Outbound 2300-2400 2300-2400

The game also uses progressively changing ports from 2000-4000, cycling a
port every 30 seconds. I assume this is for some benefit, although I have
no idea what it could be.

I am guessing that I need to setup some sort of port translation to make it
so,  but I can't see how to specify port translation through to multiple
hosts at the same time.  

Is it impossible for me and my housemate to play this game together from
behind this BSD gateway?

Any advice would be greatly appreciated.


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