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Certificate Infrastructure Requirements

Communications Server 2007 R2

Topic Last Modified: 2009-03-04

Office Communications Server 2007 R2 requires a public key infrastructure (PKI) to support TLS and mutual TLS (MTLS) connections. By default, Office Communications Server 2007 R2 is configured to use TLS for client-to-server connections.

Office Communications Server 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 Office Communications Server 2007 R2, 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 Office Communications Server servers.
  • Auto-enrollment is not supported for Office Communications Server Edge Servers.
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