Lync Phone Edition and Public Certificates
October 28, 2014 by Jeff Schertz · 13 Comments
This article aims to serve two purposes. Firstly, as a reminder to always keep Lync Phone Edition (LPE) devices updated and not to grow lackadaisical regarding the routine administrative tasks of frequently downloading these periodic cumulative updates and applying them to the Lync servers. Secondly, if the previous advice was not taken to heart then […]
MSTurnPing Bug
October 14, 2014 by Jeff Schertz · 5 Comments
The MsTurnPing.exe application included in the Lync Server 2013 Resource Kit Tools package contains a bug that may have inadvertently triggered some incorrect practices related to the configuration of Edge server certificates. Remember that the officially supported, best practice covered in this previous article is that an Edge Pool must utilize a single, identical certificate […]
Improved RMX Certificate Management
October 28, 2013 by Jeff Schertz · 17 Comments
As of the 8.1 firmware release of Polycom RealPresence Collaboration Server (RMX) SSL certificates are now managed using a completely different method than used with previous versions (7.6 and older). When integrating an RMX with Lync Server an SSL certificate must be issued to and installed on the RMX so that secure MTLS communications with […]
Certificate Revocation in Lync 2013
February 28, 2013 by Jeff Schertz · 15 Comments
With the introduction of new clients and services throughout Office 365, Lync Server 2013, and Office Web App Server there is now an even higher level of security enforced in relation to using SSL certificates. In the past Office Communicator and Lync clients would not require availability of revocation status for a certificate that was […]
Lync Server ‘Certificate Cliff’
January 29, 2013 by Jeff Schertz · 26 Comments
The average human interpretation of the Mayan calendar may have proven grossly inaccurate regarding the significance of the date of December 21, 2012 but there is now a new date to be genuinely concerned about which will actually have a real impact on at least some of our lives: November 1, 2015. As pointed out […]
How HTTP is Utilized in Lync Server
December 30, 2012 by Jeff Schertz · 17 Comments
Nearly all communications between Lync clients and the Lync Server web services are maintained over port 443, yet there are a few instances when HTTP traffic over Port 80 is utilized. Thus depending on the scenario if any traffic over this port is not allowed to or from the server then some functionality may be […]
Importing Certificates on Polycom SIP Phones
November 5, 2012 by Jeff Schertz · 25 Comments
A recent blog article shows how to easily deploy a Polycom SIP Phone running UCS 4.1.0 firmware in a Lync environment, but in the event that the device is unable to successfully sign in to the Lync server then this is typically a TLS communications problem most often attributed to a certificate trust failure. […]
Lync Edge Server Best Practices
July 25, 2012 by Jeff Schertz · 118 Comments
Amazingly enough these topics still comes up daily in technical forums, planning discussions with customers, and when troubleshooting improper deployments. Although most of this material is not new and can be found in various places this article is intended as summary reference for readers new to the elusive concepts of Edge and Reverse Proxy services. […]
Lync Web Services Load Balancing with KEMP VLM
June 5, 2012 by Jeff Schertz · 19 Comments
This article addresses a standard DNS Load Balanced scenario utilizing a Hardware Load Balancer (HLB) for web server requests only. What is unique about this setup though is that the HLB is not actually a hardware solution, as the KEMP VLM is a virtualized service. Although operation is identical between each, the Hyper-V version (also […]
Simple Certificate Requests in Lync
January 1, 2012 by Jeff Schertz · 35 Comments
As much improved as the certificate request process has been in Lync 2010 Server from previous versions there are still various occasions where using the Lync wizard can prove to be more difficult then it needs to be. And with the recent release of the new Lync Mobility service and mobile clients there will be […]
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