none
LYNCDISCOVER HTTP PORT 80? RRS feed

  • Question

  • Every time I sign in to my lync mobile client on either iOS or Android I get the following notification

    "Lync is attempting to redirect you to lyweb-ext.domain.com"

    Then it shows all my public certificate information, when I click continue login works.

    I believe this is happening because when I visit http://lyncdiscover.mydomain.com I download the file when prompted and it has the following entries as you can see its redirecting to HTTPS

    {"Root":{"Links":[{"href":"https:\/\/lyweb-ext.domain.com\/Autodiscover\/AutodiscoverService.svc\/root?sipuri=","token":"Redirect"}]}}

    We want to use HTTP Port 80 to 8080 for lyncdiscover, our reverse proxy is configured to send traffic over 80 to 8080.

    We are doing this because we do not want to change our SAN entries each time we onboard a new SIP domain.

    If I manually configure the mobile client to point to http://lyweb-ext.domain.com/autodiscover/autodiscoverservice.svc/root it signs in without the prompt.

    How do I get the above redirect to stop sending lyncdiscover to HTTPS and to HTTP instead?

    Tuesday, September 11, 2012 12:29 AM

Answers

  • The mobility client will actually attempt auto-discover connections to both HTTP and HTTPS at the same time and take which ever connection responds first.  Also the behavior is different between the iOS, Android, and WP clients so you will see a different slightly order of events in the logs.

    Jeff Schertz | Microsoft Solutions Architect - Polycom | Lync MVP

    • Marked as answer by GoneLyncSane Tuesday, September 11, 2012 9:23 PM
    Tuesday, September 11, 2012 1:06 PM
    Moderator

All replies

  • I read its supposed to try to use HTTP first but its instantly using HTTPS...
    Tuesday, September 11, 2012 1:27 AM
  • You have to use Reverse Proxy.  I know that there are some firewalls that could do it, but Reverse Proxy with TMG is recommended by Microsoft.

    These is the step-by-step guide how to do this.

    http://www.darylhunter.me/blog/2011/11/lync-2010-reverse-proxy-part-1.html

    Thank you.

    Tuesday, September 11, 2012 10:40 AM
  • The mobility client will actually attempt auto-discover connections to both HTTP and HTTPS at the same time and take which ever connection responds first.  Also the behavior is different between the iOS, Android, and WP clients so you will see a different slightly order of events in the logs.

    Jeff Schertz | Microsoft Solutions Architect - Polycom | Lync MVP

    • Marked as answer by GoneLyncSane Tuesday, September 11, 2012 9:23 PM
    Tuesday, September 11, 2012 1:06 PM
    Moderator
  • Jeff, have you used the remote connectivity analizer lately? have lync / s4b stopped autodiscover over port 80???

    Head, Network Security and Infrastructure

    Thursday, March 24, 2016 4:47 PM