Technical Tip: The block page is accessible sporadically

[duenlim]

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.
Scope	FortiGate 7.2/7.4/7.6.
Solution	The packet capture results show the block page is accessing from an IP address 216.239.34.157:443 through tunnel.googlezip.net. Use the Static URL Filter to block the tunnel.googlezip.net or Proxy Avoidance Category.