IPTables question

[Bill McGonigle]

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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