Date: Sat, 02 Dec 2006 13:33:59 -0800 From: Garrett Cooper <youshi10@u.washington.edu> To: freebsd-questions@freebsd.org Subject: Re: VoIP behind NAT and FreeBSD Message-ID: <4571F147.1000807@u.washington.edu> In-Reply-To: <4571A63D.1020605@androme.com> References: <BAY104-F30F0B4D35C184F62F5B789AD90@phx.gbl> <45718A77.3090107@androme.com> <45718C19.2000809@joeholden.co.uk> <200612021034.45192.derrick@uniquestrength.net> <4571A63D.1020605@androme.com>
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Kurt Dethier wrote: > Derrick Edwards wrote: >> On Saturday 02 December 2006 09:22, Joe Holden wrote: >>> Kurt Dethier wrote: >>>> STUN will only work if you have the correct NAT implementation on >>>> your gateway. If you are using pf, you get what the STUN RFC calls >>>> a symmetric NAT. STUN will not help you in such an implementation. >>>> I'm not sure how the other NAT solutions on FreeBSD are implemented. >>>> >>>> If you need a solution for a symmetric NAT, you need something that >>>> understands the signaling protocol and can add fw/nat rules on demand >>>> on your gateway, or a media proxy (like TURN). >>>> >>>> Kurt > >> >>> It is entirely possible to use voip behnd symmetric nat, but it also >>> entirely depends on the setup, some more details will help. >>> >> Hi, I am not sure of your setup either, but I have Vongae working >> behind a FreeBSD Firewall/Router using PF with NAT. > > Hi all, > It is very possible to use VOIP behind a symmetric NAT, but STUN is not > going to be any help. Depending on the setup and clients I have > implemented a number of solutions over the past years. > Unfortunately I haven't found a single solutions that always works. > > Kurt Forgive me if I'm not understanding the issue properly, but don't you have port-forwarding setup on the FreeBSD box for the machine that you are trying to use VoIP with? It seems like the problem would *sort* or be that simple to solve, unless the VoIP setup uses a P2P type configuration where it picks multiple ports for listening and transferring data. Maybe it's just my misunderstanding of VoIP.. -Garrett
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