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how to reject INVITE from unknown sources
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sergeysi Offline
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Post: #1
how to reject INVITE from unknown sources
Is there a way to configure an IP-phone to reject INVITE messages from unknown sources and/or accept them only from servers at which a telephone is registered?

Here is an example of problem. We have a couple of phones with "white" external IP addresses. Script-kiddies find open 5060 UDP port and send INVITE messages, telephone rings. This is very annoying. We currently don't have possibility to put router/firewall before IP-phones. Is there a way to block INVITE messages which do not come from SIP-proxy?

I think it works on all phones but I tried to simulate it on T20P and T22P.
(This post was last modified: 10-07-2013 08:46 PM by sergeysi.)
10-07-2013 08:44 PM
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how to reject INVITE from unknown sources - sergeysi - 10-07-2013 08:44 PM

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