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duenlim
Staff
Staff
August 6, 2025

Technical Tip: The block page is accessible sporadically

  • August 6, 2025
  • 0 replies
  • 4267 views
Description

This article describes all the URLs blocked with Static URL Filter being directed to tunnel.googlezip.net, which serves as a pre-fetch proxy in Google Chrome.

 

For example: the URL domain pirateproxy-bay.com has been blocked in Static URL Filter. Even so, the block page is accessible. The browser debug log shows the Remote Address is 216.239.34.157:443.

 

tunnelgooglezip_pirateproxy_1.png

Scope FortiGate 7.2/7.4/7.6.
Solution
  1. The packet capture results show the block page is accessing from an IP address 216.239.34.157:443 through tunnel.googlezip.net.

 

tunnelgooglezip_pirateproxy_2.png

 

  1. Use the Static URL Filter to block the tunnel.googlezip.net or Proxy Avoidance Category.
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