I am in the process of setting up CUP federation over XMPP and as I would like to enable security it looks like I should get an SSL certificate from a public CA. The problem is I don't know what name I should get as the CN. Cisco's docs are a little vaugue on the topic:
They state "For XMPP Federation, the Subject Common Name (CN) for the certificate must contain the domain of
the Cisco Unified Presence server."
In my situation our internal AD/dns domain is like internal.domain.com, my servers (HA pair) are named dc1im01.internal.domain.com and dc2im01.internal.domain.com.
What does my CN on the certificate need to be and do I need more than one certificate since I will use both CUP servers to federate via the DNS SRV records?
I expect that I need the entry "Enable use of Email Address when Federating" found under Presence -> Settings.
I also took note of "You can configure a wildcard domain here, for example, ‘*.example.net’ if you deploy the Chat feature
on Cisco Unified Presence, and the chat component is a subdomain of the parent domain." However for cost purposes I would preffer not to have to get a wildcard certificate as they get a little pricey, but if that is what I need for my environment; it is what it is.
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