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Forums › VoIP › VOIP on Fritzbox behind pfSense?
Ginz

5 posts

Wannabe Geek


#208534 16-Feb-2017 01:25
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Hey, I'm looking to build myself a pfSense box, replacing my Fritz as a router and was wondering if I can still use the Fritz for VOIP?

 

Do I just forward ports 5060 and 5061 TCP/UDP to the Fritzbox and then connect as per usual?

 

My broadband and VOIP is through 2degrees. Are there any other special configurations that I need to do?

 

 

 

 

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fe31nz
1294 posts

Uber Geek
+1 received by user: 423


  #1721575 16-Feb-2017 22:00
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No, you need to map the SIP port on 5060, and the UDP port range 7078-7109 for the RTP connections that actually carry the VOIP conversations.  The range of ports used for RTP varies between VOIP devices, but 7078-7109 is what my 7390 needs and it is likely the same for 7490s also.

 

To get 2degrees' management of the FritzBox to work, you need to map TCP port 8089.  They prefer to be able to manage the box to ensure the VOIP config is good, as a bad config can open up your network to people who will happily route thousands of dollars of international tolls traffic through your phone number and bill you for it.  When I last checked, my SIP port was getting probes from people like that at least twice a day.  Unfortunately, the standard config 2degrees loads also sets up the FritzBox for connecting directly to their network via the WAN port, which is not helpful if you are running the FritzBox behind another router.  I solved that in my setup where I use a Ubiquiti ERLite3 as my Internet router by running the FritzBox off a second ERLite3 where I have it connected on a PPPoE server in such a way that it thinks it is directly connected to the 2degrees PPPoE router, and has my static external IP address on its WAN port just as though it was.  That means the standard 2degrees config works just fine and I can let them manage the FritzBox.  But it takes a bit of creative configuration in the ERLite3 boxes, and needs either two routers or the use of Linux's ability to run more than one network namespace.

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