Unable to block Skype

L2 Linker

Unable to block Skype

Testing target is Skype which came with Windows 10.

Use the method in the link below and was work (for 1-2 days)



Then 1 day suddenly found that it not working anymore.

Since I'm evaluating it (PA-220). There were many configuration changed. Any idea what possible reason that made the security profile not work?


I did more test. The security policy successful deny the classic Skype Desktop app.

But not the 1 came with Windows 10. Which is Trusted Microsoft Store app.


Cyber Elite


Are you decrypting this traffic at all or not? If you look at the traffic logs is the UWP traffic actually getting identified as Skype traffic or is the firewall identifying the traffic as 'ssl'? 

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