Lync IM encryption


  • 1. Lync IMs always go via front end. No IMs between client without server in the middle. - correct?

    2. Lync client-server traffic is always encrypted then how to disable TLS for IM and presence on internal network?

    Strictly internal traffic can use either TLS, in which case the instant message is encrypted, or TCP, in which case it is not. - How ?

    3. Lync IM to federated\PIC users - always encrypted -

    Lync edge to federated partner - encrypted

    Lync edge to Lync front end pool - encrypted

    Lync front end to lync clinet - encrypted or unencrypted.

    • Edited by mombu Thursday, December 13, 2012 5:08 PM
    Thursday, December 13, 2012 5:07 PM


  • 1. Yes

    2. It is no longer possible to configure TCP in Lync Server.

    A similar case for your reference:

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    TechNet Community Support

    • Proposed as answer by Kent-Huang Monday, December 17, 2012 10:38 AM
    • Marked as answer by Kent-Huang Friday, December 21, 2012 1:43 AM
    Saturday, December 15, 2012 6:46 AM