The VCS is not a web server. It has a webUI for configuring, but the certificate is used for added encryption security using TLS. Not sure if you already got your answer or if this was helpful, but if you need more info or details, please repost on our telepresence forum, which is more geared toward answering hardware specific questions such as this.
That forum can be found here: https://supportforums.cisco.com/community/5886/telepresence
This forum is specific to the Webex Telepresence service, and not for general TP hardware.
SG350X, Sx550X: RSPAN Mirrored Packet Loss when Forwarding
February 12, 2017
Configure Client QoS MAC Class Map on the WAP125 or WAP581
The Quality of Service (QoS) feature on the WAP125 or WAP581 access points contain Differentiated Services (DiffServ) support that allows you to classify and man...
SG350X: Running Cable Test Via The "Test Cable-Diagnostics Tdr" Command May Provide Unpredictable Results
May 23, 2017