[Gllug] routing broadcast traffic

[Richard Cottrill]

It's not possible to have multicast/broadcast TCP. They're most likely UDP
packets. I have no idea what port they're on. In the Smoothwall boxes
there's an IP masquerading module for quake. I'm not sure if the module is
required for other games (although I expect it is); nor if it's required
when running iptables.

Hope this has helped someone somewhere.

Richard

> -----Original Message-----
> From: gllug-admin at linux.co.uk [mailto:gllug-admin at linux.co.uk]On Behalf
> Of Ian Norton
> Sent: Tuesday, January 29, 2002 12:26 PM
> To: gllug at linux.co.uk
> Subject: Re: [Gllug] routing broadcast traffic
>
>
> 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 ,
>
> but i was thinking if broadcasts are like multicasts then i could simply
> route to the host and then iptables filter out any 'misc crap'
>
> bred
>
>
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