The system monitors traffic volume to prevent Denial of Service (DoS) attacks, blocking IPs that exceed predefined thresholds.
Save the configuration to ensure the rule ignores the trusted host while still blocking potential threats from the rest of the internet. Method C: Modifying Protocol Options
Visit the FortiGuard Web Filter Lookup to see if the site is wrongly categorized. Create a Static URL Filter: Navigate to Security Profiles > Web Filter . Under Static URL Filter , click Create New . The system monitors traffic volume to prevent Denial
Seeing the message typically means the network's security policy has flagged your traffic as either a security threat or a violation of content rules. Why Access is Blocked
If you believe the block is a mistake or need immediate access: Create a Static URL Filter: Navigate to Security
Tools like stunnel can wrap non-encrypted traffic inside a standard TLS layer, making it look like normal HTTPS traffic.
IPS looks for deviations from standard protocol specifications (e.g., malformed HTTP headers or unusual TCP flags). Why Access is Blocked If you believe the
This technique encapsulates IP traffic within standard DNS queries (NSLOOKUP/TXT records). Because networks rarely block DNS requests to external resolvers, traffic can slip past the IPS. However, modern FortiGuard systems often have specific signatures to detect high-frequency DNS tunneling patterns.
In your firewall policy, change SSL Inspection to No Inspection (not recommended for production) or Certificate Inspection for specific, known-safe traffic. Alternative Solutions (Non-Administrative)