[Gllug] routing broadcast traffic

[Jonathan Dye]

At 12:26 29/01/02 +0000, you wrote:
>On Tue, Jan 29, 2002 at 10:58:42AM +0100, Jonathan Dye wrote: 
>> You could probably route only the broadcasts to the specific port that the
>> servers use therefore you wouldn't get all the other crud.  That is
>> assuming you can route the broadcasts at all.  It probably requires some
>> trickery with netfilter.
>
>hmm, i initially thought that but broadcast addresses (i think) are
>simply another IP that all hosts with a particular subnet listen on in
>addition to thier own ip, 
>
>i am uncertian what port halflife broadcast traffic goes to or even if
>its tcp or upd , 

Try using tcpdump to have a look at a running server.
I had a similar problem with Halflife but I can't rememeber which port it
was and I never got around to trying to route the broadcasts.
I think broadcasts are not routed by default, I don;t know how to change
this.  
>From what I can remember the bradcasts showed up in tcpdump with a
destination of 255.255.255.255:<portnumber> so you may be able to do some
pre routing stuff to re-write this to <machineIP>:<portnumber> with
iptables or soemthing.

JD

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