Cheat sheet with all Ports and rules needed for a Skype 2015 Onpremise environment

Skype For Business Ports

As in my previous post i will share a cheat sheet with you. This time the cheat sheet refers to a Skype For Business Onpremise implementation. To make things easier for myself, I created an overview of all ports and ip adresses that hits firewalls and network of customers.

TThe document is mentions as a cheat sheet this means that you can adjust it and present it to the customers network team.


There are always some requirements.

  • External IP adresses for remote Subdomains
  • Access to EXternal DNS
  • This Drawing does not contain the Office webapp server

Skype Ports

Please let me know if you are missing some things.

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