jabley at isc.org
Sat Nov 1 18:23:15 UTC 2003
On 1 Nov 2003, at 12:43, Owen DeLong wrote:
> That probably means they are not using SIP, but, instead are using
> either H.323 or some other proprietary ugliness. That's unfortunate.
You can use SIP through a NAT, if you can hack the NAT to poke
particular ranges of ports back to devices on the internal network.
There's no useful way to use H.323 through a NAT though, at least that
I have seen working.
> SIP has to include the IP address of the RTP destination in it's
> As such, you can't use SIP cleanly across NAT unless the NAT box knows
> to proxy the SIP and edit the payload (very messy).
Yeah, that's not actually the case.
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