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How secure is SIP over the Internet?

jo-knight
Level 1
Level 1

‎02-14-2008 11:46 AM - edited ‎03-15-2019 08:50 AM

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
Level 1
Level 1

‎02-14-2008 12:07 PM

yeah there sip-tls or simply SIPS and SRTP which use AES to encrypt your call control and audio data.

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jo-knight
Level 1
Level 1
In response to nikolay-shopik

‎02-14-2008 12:12 PM

Thanks. So is this built in to CUCM 6.x by default?

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