[plug] Prevent Gateway from redirecting

[Timothy White]

On 12/29/06, Adrian Chadd <adrian at creative.net.au> wrote:
> On Fri, Dec 29, 2006, Timothy White wrote:
>
> > A number of things shouldn't go through the gateway though, and I
> > don't want to be changing routes for them. Namely, VoIP needs the
> > redirect so it can go straight via the modem (not just for lowest
> > latency, but also because of it's physical connection, no point
> > jumping through 2 switches just to jump back! And if someone in the
> > house starts playing games...
>
> I'd be surprised if VOIP going via your linux box made any actual
> difference. Except, of course, when your Linux box was down.
> If it did then you could just setup priority queueing on your Linux
> box so it treated VoIP packets with higher priority and dequeued
> them as such.

Hmmm, I had forgot that would let me finally do QoS....

>
> > >Still - just disable ICMP redirects. I'm sure there's a way to do selective
> > >ICMP redirect responses based on iptables rules but it'll be more trouble
> > >than
> > >its worth in the long run.
> >
> > Any ideas on that? Once I finish recompiling my local kernel with
> > iptables support (left out due to the fact it never needed it, being
> > totally firewalled in with 2 other firewalls), I'll do the redirect
> > locally, if I can work out which table it now needs to go in!!
>
> Erm, which distro are you using? modprobe iptables should do the trick..

Ubuntu, but I compiled a custom kernel for my own machine for a few reason.

>
> Nope, no idea. I haven't deployed that kinda stuff - I just turn off
> ICMP redirects and configure routers right. :)

I may just try that, now I realise QoS would be avaliable...
:-D

Thanks

Tim
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