However, no security solution is infallible. Attackers and disgruntled employees frequently look for ways to slip past these filters. As a defender, your job isn’t just to enable the filter—it’s to understand how it can be bypassed and close those gaps.
A user or attacker can bypass domain reputation checks by using direct IPv4 or IPv6 addresses. They might also edit their local hosts file to map a blocked domain to an allowed IP. fortiguard web filtering bypass
Enable Full SSL Inspection on your firewall policies. Deploy the FortiGate CA certificate to all endpoints. Without this, your web filter is essentially blind. 2. IP-Based vs. Domain-Based Access FortiGuard primarily filters by domain name (URL/category). If a malicious server is hosted on a raw IP address (e.g., http://192.0.2.100/malware.exe ), and that IP is not categorized in FortiGuard’s database, the request may sail through. However, no security solution is infallible