May I ask what ports are necessary for SIP communication through a firewall? I read somewhere that UDP/5060 alone is enough. Some recommends more ports to be opened for RTP.
Both the above statements are correct.
SIP uses port 5060
RTP uses multiple ports, typically in the range 10000-20000
Remember that SIP and RTP are different - SIP is used to set up the call; RTP is used to carry the audio once the call has been set up.
Thanks. May I ask what security control can be applied to RTP besides reducing the opened range? Are there stateful inspection can be done on this?
Regards, Norman Zhang _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
