[Asterisk-Users] ipchains for firewall, QOS howto?

[Chris Coulthurst]

I have an Asterisk PBX behind a 'manually-built' IPCHAINS firewall machine.
Can anyone tell me what I need to allow/build QOS packet rewrites through
this simple NAT barrier?  What do I need to pass to IPCHAINS to let QOS out
to the next outside network hop?  

 

I ask this, because I have been getting intermittent jitter from my provider
(TELIAX), and since it seems near-impossible to verify the source of the
latency, I want to make sure I have all my 'Ts crossed and I's dotted'
before I blame something external for my issues.

 

On the same note, what is the best way to test my connection for jitter,
packet loss, etc, and still be able to determine what the potential culprit
is for the problem?

 

Thanks again,

 

Chris Coulthurst

 

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