Date: Wed, 18 Jan 2012 09:08:32 +0100 From: volker@vwsoft.com To: Matthias Apitz <guru@unixarea.de> Cc: freebsd-net@freebsd.org Subject: Re: PPP to UMTS provider && incoming traffic (TCP, UDP) Message-ID: <4F167E00.9040601@vwsoft.com> In-Reply-To: <20120117190847.GA1255@tiny> References: <20120117190847.GA1255@tiny>
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On 01/17/12 20:08, Matthias Apitz wrote: > > Hello, > > I'm used to connect my FreeBSD 10-CURRENT netbook to Internet via PPP; > the provider in question is a German O2 UMTS provider; so far so good, > i.e. all is working as it should: outbound HTTP, SSH, SMTP (I'm just > sending this mail through such a connection), ... > > what does not work is VoIP; the call is established via SIP (using a > STUN server), but remote audio RTP packages are not coming down; I > checked this with TCPDUMP: only upstream RTP is send, no incoming UDP; > > as well I checked incoming TCP, for example incoming SSH or HTTP; it > seems that incoming UCP/TCP is just not coming through the PPP link; > > before bother (complain) the provider with this, I wanted to ask if I > miss something in the PPP configuration to get incoming delivered; > > note: I'm not talking about NAT to some stations on a LAN, I just want > get IP to the local host (interface tun6); as well I disabled ipf(8) > which I have configured normaly; > > any ideas? thanks in advance > > matthias Matthias, can you please check the IP address you're getting from your mobile network provider? AFAICT most hand out IPv4 addresses from private network address space (RFC-1918). For some European countries I can tell, I've never seen routable addresses being used on 3G networks. That might be the most likely cause of your trouble. All the best, Volker
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