Solved

Connecting Lync Client to Lync Server throw the Internet - Just one StandAlone LyncServer

Posted on 2014-01-31
7
450 Views
Last Modified: 2014-02-04
Hello

I configured a StandAlone (Standard) Lync server 2013 inside my network and I can use the Lync clients internally without any issue, it Works very fine.

Now I want to connect the Lync clients from the Internet. I published my Lync server from the Internet opening ports TCP 443 and TCP 5061 in my router, but when I try to connect from the outside the Lync client returns a generic connection error

Additional information: My Lync server is using the Lync certificate from an internal CA that is trusted by the computers that I want to connect from the outside (It was added to the Trusted Root CA Authority" store in order to avoid certificates issues)

Any idea what is going on?
0
Comment
Question by:Schnell Solutions
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 58

Accepted Solution

by:
Cliff Galiher earned 500 total points
ID: 39825929
A Lync edge server is mandatory for that usage scenario. 5061 is only a primary communications channel. There are several secondary channels that are also opened that the edge server facilitates. This is all based on STUN/TURN industry standards so is not unique to Microsoft.
0
 
LVL 14

Author Comment

by:Schnell Solutions
ID: 39826591
Hello,

The StandAlone Lync server includes an internal Edge component. Is it necessary and mandatory to use one additional server (two servers in total) just for publishing IM for few users?
0
 
LVL 58

Expert Comment

by:Cliff Galiher
ID: 39826754
For external users, yes.
0
Office 365 Training for IT Pros

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

 
LVL 14

Author Comment

by:Schnell Solutions
ID: 39827073
Hello Cliff,

If I want to add an additional Edge server in order to convine it with the StandAlone Lync Server. Do I need to modify the Lync Topology again? Or just install a new server including that role?


In another hand, what is different that it connects internally in the network but not from the outside?

J@B
0
 
LVL 58

Expert Comment

by:Cliff Galiher
ID: 39827180
You will have to update your topology. And as far as the differences, it stems from the media channels that Lync uses and various NAT traversal mechanisms. Like I said, you can read about SIP, TURN, STUN, and ICE in various SIP forums. Asterisk, 3CX, and various other SIP based products use similar topology technologies for the same basic reasons.
0
 
LVL 14

Author Comment

by:Schnell Solutions
ID: 39833908
Thanks Cliff
0
 
LVL 14

Author Closing Comment

by:Schnell Solutions
ID: 39833911
Lot of thanks
0

Featured Post

Edgartown IT Case Study

Learn about Edgartown's quest to ensure the safety and security of the entire town's employee and citizen data. Read the case study!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

After hours on line I found a solution which pointed to the inherited Active Directory permissions . You have to give/allow permissions to the "Exchange trusted subsystem" for the user in the Active Directory...
Popular third-party chat platforms like Slack, Discord, and Telegram are just a few of the many new productivity applications that are being hijacked by cybercriminals to create command-and-control (C&C) communications infrastructures for their malw…
To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Servers >> Certificates…
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question