How to block viber?!

[new_in_pf]

Hello to every body see this post

How to block viber?

Is there a way to block viber in pfsense?

What is viber standard pattern to add it to layer7 of traffic shaper?

Is it possible?!

[MikeV7896]

Create firewall rules to block the following ports:

In order for Viber Desktop to run on your computer, the following ports must be open:
TCP: 5242 and 4244
UDP: 5243 and 9785

Reference: https://support.viber.com/customer/portal/articles/1506350-opening-ports-for-viber-desktop

And yes, I realize the article specifically mentions Viber Desktop. However other posts/articles elsewhere say that the same ports are used in the mobile apps.

[Wolf666]

Use Snort + AppID?
http://blog.snort.org/2014/04/openappid-application-rules.html

Just an idea….