How secure is SIP over the Internet?

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Feb 14th, 2008
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Hi,


I am wondering how secure using SIP phones is over the Internet? I have a requirement for users to connect into a CUCM 6.x system from home, but there are no VPN's in place.


Is this a good idea, or is there some security built into SIP. I read something about Secure-SIP and SRTP but havent been able to get anything concrete regarding CUCM 6.x.


Thanks!

Jo

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nikolay-shopik Thu, 02/14/2008 - 12:07
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yeah there sip-tls or simply SIPS and SRTP which use AES to encrypt your call control and audio data.

jo-knight Thu, 02/14/2008 - 12:12
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Thanks. So is this built in to CUCM 6.x by default?

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