[cisco-voip] TVS & Signed Certificates

[Ryan Ratliff (rratliff)]

As I indicated, just signing TVS gets you nothing because the TVS cert will always be in the ITL.  The gains come from the other certs TVS has to auth, and that those certs are signed by the same CA.
The real savings is just in the limited number of trust certs you have to upload.  For multiple clusters it's probably just as easy to use the bulk cert upload feature.

-Ryan

On Aug 11, 2014, at 3:07 PM, Heim, Dennis <Dennis.Heim at wwt.com<mailto:Dennis.Heim at wwt.com>> wrote:

Ryan:

I installed enterprise signed certificates (TVS) on both clusters. However, the usual issue between moving phones between clusters is still there. Apparently that idea does not work.

Dennis Heim | Collaboration Solutions Architect
World Wide Technology, Inc. | +1 314-212-1814
<image001.png><https://twitter.com/CollabSensei>
<image002.png><xmpp:dennis.heim at wwt.com><image003.png><tel:+13142121814><image004.png><sip:dennis.heim at wwt.com>


From: Ryan Ratliff (rratliff) [mailto:rratliff at cisco.com]
Sent: Monday, August 11, 2014 9:48 AM
To: Heim, Dennis
Cc: cisco-voip voyp list
Subject: Re: [cisco-voip] TVS & Signed Certificates

Yes, but not by nature of the TVS cert itself being CA-signed. Since the TVS cert will get into the ITL who signs it doesn't matter.
Why it may help is because TVS will authorize any cert in the local server's trust store.  If the other certs (the ones the endpoint presents to TVS) are CA-signed and TVS has the root cert available then in theory any cert signed by that root cert will be authorized, regardless of whether the actual cert has been uploaded to UCM.
This of course is an educated guess, and I'd thoroughly test it in the lab first.

-Ryan

On Aug 8, 2014, at 8:15 PM, Heim, Dennis <Dennis.Heim at wwt.com<mailto:Dennis.Heim at wwt.com>> wrote:

If you used signed certificates by your enterprise CA for TVS, would that allow TVS to validate across multiple clusters if both clusters TVS certificates were signed by the same CA?

I am trying to determine if there would ever be an advantage to doing a non-self signed certificate on the TVS.

Dennis Heim | Collaboration Solutions Architect
World Wide Technology, Inc. | +1 314-212-1814
<image001.png><https://twitter.com/CollabSensei>
<image002.png><xmpp:dennis.heim at wwt.com><image003.png><tel:+13142121814><image004.png><sip:dennis.heim at wwt.com>


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