FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
This article describes one of the invalid characters restricted in the wildcard of the Web Filter Url Filter list.
Scope
FortiGate.
Solution
Below are the wildcards of www.example.com that can be used in the Web Filter Url Filter list:
*.example.com*
*example.com*
*example.com/*
But when using the character '//' such as example below, it is strictly disallowed.
*example.com//*
More examples as shown below:
*chrome-extension://*
It is possible to observe a lot of non-related websites or URLs trying to match the invalid character // configured in the Web Filter Url Filter's entry.
