VoIP Security: Difference between revisions
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*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.
If you run your own server and allow phones to use it from your WAN/Internet, then lock this down as much as possible - perhaps only allow access to your PBX from the Internet via a VPN.
= Other Tips =
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