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VoIP Security: Difference between revisions
→Warning Emails
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This feature was added in October 2011, the default warning level is £10, and numbers who used over £10 in September the rate was set to 1.2 times Septembers bill amount.
== Your Firewall ==
Protect your network from the outside.
See http://aa.net.uk/kb-telecoms-voip.html for more info, but:
*Allow SIP from our servers: UDP port 5060 and 2002 from 81.187.30.110 - 81.187.30.119 (we may add more servers in the future, but will be on the above URL when we do)
*Allow RTP from everywhere: UDP 1024-65535* from everywhere (which also covers SIP above)
*Don't allow access to your phone or servers web configuration pages from the Internet.
SIP is the call routing information that creates and manages calls.
RTP is the actual audio. RTP will be as direct as possible, the audio can be sent from anywhere on the internet, which is why these ports need to be open.
*on most phones/clients you can configure which ports to use for RTP, so you can restrict this range further eg on a SNOM phone the default range for RTP is 49152 through to 65534.
= Other Tips =
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