IPTables question

[Ed Robbins]

Where is the UAS running that the client is communicating too? 

The re-INVITE should have the same call-id, branch and to tag, so I'm 
thinking the UAS will pick up the IP change which is ultimately what you 
want.

Ed

Bill McGonigle wrote:

> On Dec 15, 2005, at 18:22, klussier at comcast.net wrote:
>
>>  When the IP address on the client changes, it sends a reinvite to 
>> the NAT box to tell it what the new IP address is.
>
>
> I don't know SIP beyond a magazine article, but at a higher level it 
> sounds like you need something like a mod_conntrack_sip that would 
> know how to parse the SIP reinvite and tweak the proper kernel entries 
> accordingly.
>
> Or you might be able to find a module that can track the DHCP 
> conversations similarly.  That being older it's more likely to exist 
> and would be protocol-generic, so probably better.
>
> Either way, it sounds like you probably need a kernel module that 
> understands that kind of traffic and can adjust the NAT tables.
>
> -Bill
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