The Web Filter offers comprehensive QUIC Controls to block QUIC protocol traffic. QUIC (Quick UDP Internet Connections, pronounced quick) is an experimental transport layer network protocol developed by Google. QUIC was designed to provide security protection equivalent to TLS/SSL, along with reduced connection and transport latency, and bandwidth estimation in each direction to avoid congestion. QUIC is automatically enabled in the Google Chrome browser and is used on most Google sites.
Unfortunately, encrypted traffic passing through the QUIC protocol cannot be unencrypted. As a result, allowing QUIC will not allow you to decrypt a significant amount of Google traffic (including Gmail and Hangouts traffic.) As a result, you will not be able to view and control your student activities on these sites.
The Web Filter offers an easy solution by disabling all QUIC protocol traffic, therefore forcing Google sites to use traditional SSL decryption, which can easily be decrypted.
Due to this, we enable QUIC blocking by default. To block or unblock QUIC, navigate to Web Filter > General and scroll down to QUIC Controls.
You can enable QUIC blocking (enabled by default) by checking the Block QUIC box. You can disable QUIC blocking by unchecking the box.
Note: You can add QUIC exemptions in the P2P/Bypass/QUIC Exemptions section.