iptables and voip

iptables and voip

[Christ, Bryan]

I have a NAT firewall and two voip phones located behind the firewall.
I wanted to know if it was possible to prioritize that traffic with
iptables so that my phone conversations received enough bandwidth.  I
apologize if this information is somewhere on the netfilter website.  I
looked for something related but could only find information on
prioritizing quake and a few other services.  I also "google" it and
came up with nothing significant.

Thanks in advance to all who reply,
Bryan

Re: iptables and voip

[Daniel Lopes]

Christ, Bryan schrieb:
> I have a NAT firewall and two voip phones located behind the firewall.
> I wanted to know if it was possible to prioritize that traffic with
> iptables so that my phone conversations received enough bandwidth.  I
> apologize if this information is somewhere on the netfilter website.  I
> looked for something related but could only find information on
> prioritizing quake and a few other services.  I also "google" it and
> came up with nothing significant.
> 
> Thanks in advance to all who reply,
> Bryan
> 
> 

Perhaps you want to try the LARTC mailinglist it can be found via 
www.lartc.org it´s a better location to deal with such questions.

Re: iptables and voip

[Mogens Valentin]

Christ, Bryan wrote:
> I have a NAT firewall and two voip phones located behind the firewall.
> I wanted to know if it was possible to prioritize that traffic with
> iptables so that my phone conversations received enough bandwidth.  I
> apologize if this information is somewhere on the netfilter website.  I
> looked for something related but could only find information on
> prioritizing quake and a few other services.  I also "google" it and
> came up with nothing significant.

Not being able to help at the moment, according to a friend of mine, who 
worked at IP telephone systems, this is be a Quality of Service topic.

Voip/Sip et al will happily consume all bandwidth available - of cause, 
depending upon just _how_ much bandwith you're buing :p
He solved it with the build-in QOS in his router. YMMV...

-- 
Kind regards,
Mogens Valentin