Viber ports range, how to block Viber in network?

Support: WFilter Free 1.0, WFilter zh.4.1, WFilter en.4.1
  Author: Alice ModifyTime: 2019-02-14 04:19:04  
      Viber for Windows Viber lets you send free messages as well as make free calls to other Viber users, on any device and network, in any country!  

This protocol is official supported. You can install it in "System Settings"->"Protocols" of WFilter.


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"Viber" uses TCP protocol for communication.

TCP traffic analysis

Ports Range

Remote tcp port(s): 443,5222.

TLS traffic analysis

TLS connections are found in Viber's traffic.

TLS Host(s) being connected(regular expression): ^.*viber\.com$.

How to block Viber?

  • Block the listed ports to block Viber.
  • Block the listed http and tls domains to block Viber.
  • Setup a content filter(ie: WFilter), which can block Viber via signature matching.

Viber v2.0(2019-02-14 04:19:04)

● new pattern

Viber v1.0(2013-05-28 01:46:00)

● viber_en