Topic Last Modified: 2010-07-18
Microsoft Communications Server 2010 requires a public key infrastructure (PKI) to support TLS and mutual TLS (MTLS) connections. By default, Communications Server 2010 is configured to use TLS for client-to-server connections.
Communications Server 2010 uses certificates for the following purposes:
- TLS connections between client and server
- MTLS connections between servers
- Federation using automatic DNS discovery of partners
- Remote user access for instant messaging (IM)
- External user access to A/V sessions, application sharing, and
Web conferencing
For Communications Server, the following common requirements apply:
- All server certificates must support server authorization
(Server EKU).
- All server certificates must contain a CRL Distribution Point
(CDP).
- Auto-enrollment is supported for internal servers running
Communications Server.
- Auto-enrollment is not supported for Communications Server Edge
Servers.
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