How to Block QUIC Protocol in Crystal Eye?

QUIC protocol is an experimental transport layer network protocol developed by Google to resolve issues revolving around transport latency and reduced connect. QUIC utilizes port 80 and port 443 and is known to bypass proxy which might affect the performance of Crystal Eye's Content Filter while things are being accessed through Google Chorme browser.

Henceforth, it is highly recommended to block QUIC protocol in the Crystal Eye using the Protocol Filter application since there might come instances when certain content filter features may not function as desired.

All communications done using QUIC protocol is detected and recorded in the Crystal Eye appliance. This protocol may also make it to the top protocols graph if used frequently by users in the Crystal Eye network.

When not blocked, the communications done through the QUIC protocol is detected and recorded in the Protocol & Application Detail Report. This report also provides insights of the traffic size generated through QUIC protocol by each user in the Crystal Eye network.

Know more about how Crystal Eye detects and records QUIC Protocol related traffic and displays this information in the Protocol & Application Detail Report.

Let’s explore how QUIC protocol is blocked using the Protocol Filter application.

Step 1: Go to Security Configuration > Protocol Filtering > Protocol Filter

Step 2: Click the Edit button in the Blocked Protocols section.

Step 3: You will now see the Block Protocols page. Select the tick box next to QUIC in the list, scroll up and click the Update button.

Step 4: You will now see QUIC protocol in the Blocked Protocol section.

Associated Links—Blocking QUIC Protocol in Crystal Eye
CE Manual – Protocol Filter
Detection & Reporting QUIC Protocol Details
Forum Post – How does CE Handle QUIC Protocol