Protocols List -> QQ send offline files

QQ send offline files ports range, how to block QQ send offline files in network?

QQ send offline files
Support: WFilter zh.4.1, WFilter en.4.1, WFilter Free 1.0, WFilter ROS 1.0
  Author: Bruce ModifyTime: 2018-11-05 05:18:33  
      QQ offline file transfer. Your files will be relayed via QQ servers. This protocol can block sending offline files via QQ messenger.  

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


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"QQ send offline files" uses TCP protocol for communication.

TCP traffic analysis

Ports Range

Dynamic ports, no fixed port found.

HTTP traffic analysis

HTTP traffic is found in QQ send offline files's traffic.

It also uses a particular UserAgent(regular expression): ^QQClient.

How to block QQ send offline files?

  • Setup a content filter(ie: WFilter), which can block QQ send offline files via signature matching.

QQ send offline files v2.0(2018-11-05 05:18:33)

● Separate qq offline sending file and receiving file.

QQ send offline files v1.0(2018-04-02 04:11:40)

● Separated from QQ file transfer.