What is the regular expression in Fortigate?
FortiWeb follows most Perl-compatible regular expression (PCRE) syntax. Popular FortiWeb regular expression syntax shows syntax and popular grammar examples. You can find additional examples with each feature, such as Example: Sanitizing poisoned HTML. Inverse string matching is not currently supported.
How do I whitelist a URL in Watchguard?
Edit the WebBlocker action. Select the Exceptions tab. Select the Check global exceptions check box. Click OK (Policy Manager) or Save (Fireware Web UI).