Facebook_Messenger.VoIP.Call

Description

This indicates an attempt to use the VoIP call function of Facebook Messenger.
Facebook Messenger VoIP Call is a feature in Facebook Messenger that allows users to establish a call via a TCP session and then transmit call packages via UDP sessions.

Affected Products

Facebook Messenger

Impact

Firewall Policy Bypass

Technology

Client-Server

Behavior

• Excessive-Bandwidth

Application Dependencies

• Facebook
• Facebook_Login
• STUN

Default Ports

• TCP/443
• TCP/3478
• TCP/5349
• UDP/1024-65535

References

• https://www.facebook.com/mobile/messenger/