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Trustwave Knowledge Base

Home » Knowledgebase » Legacy Products » Web Filter (R3000) » INFO: Blocking web traffic over QUIC (Quick UDP Internet...

INFO: Blocking web traffic over QUIC (Quick UDP Internet Connections) protocol

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This article applies to:

  • Web Filter - all versions
  • WFR - all versions

Question:

  • Can the Web Filter block connections over the QUIC (Quick UDP Internet Connections) protocol developed by Google?

Information:

  • Web Filter is not able to block connections over the QUIC protocol.  QUIC uses UDP over ports 80 and 443. The Web Filter does not block UDP traffic.  

Recommended Actions:

  • The recommended fix is to block outbound UDP on ports 80 and 443 at the firewall/UTM level.
  • It is possible to disable QUIC in Chrome. Navigate to chrome://flags and disable the setting for "Experimental QUIC protocol". 
  • As of Chrome version 43, the ability to disable QUIC has been added to Windows Group Policy (GPO) templates (Software\Policies\Chromium\QuicAllowed).  You can see a full set of supported policies at: http://www.chromium.org/administrators/policy-list-3

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