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Title: Firewall Conflict Post by: DANIELEGRES68 on Wednesday 16 September 2009, 01:08:09 am Hi,
My first post. We are experiencing some trouble with Voip calls (sometime call ends unexpectedly or audio is not clear) so I wonder if there is a misconfiguration or lack of performance. Our Endian Firewall settings include port forwarding for all the ports tipically used by SIP from the public IP (RED interface) to the internal (GREEN) IP of my Voip PBX. SIP Proxy is enabled. Firewall logs report that there are Firewall conflicts and that destination ip and ports are those of PBX. These logs are reporting errors or this is normal operation? I don't know which is the correct meaning of firewall conflict in this context. Title: Re: Firewall Conflict Post by: kevsworld on Wednesday 16 September 2009, 03:41:24 am Also my first post - actually 2nd but first was just me complaining about registration process for this site :P
I also use Voip behind my endian and dont have any issues. From what you are describing, it sounds more like bandwidth issues rather than port forwarding / firewall blocking. If it was the firewall it probably wouldnt work at all or you would get things like one way speech or ring connect and no speech at all. Are you using Asterisk or something based on Asterisk, if so check codecs etc. Thats my 50 cents anyway. Title: Re: Firewall Conflict Post by: Steve on Wednesday 16 September 2009, 08:22:06 pm I don't know what kind of VOIP setup you have, but I've been using a Sipura VOIP unit for years and have no problems with Transparent SIP.
I've tried my Sipura both behind and in front of Endian and there's no difference in quality. I opted to have it behind Endian to take advantage of Endian's Call logging, but Release 2.2 has a problem with logging SIP calls (It doesn't work). I've never needed to forward any ports using the Firewall/Port Forwarding. My SIP settings: Enable SIP Proxy: On Status: Transparent SIP Port: 5060 RTP Port Low: 7070 RTP Port High: 7090 Port: 5060 Audio problems are usually codec related. Most VOIP providers support multiple codecs, so it's worth playing around with them to get the best result. |