- File type—prevents deleting or creating a file or directory. Only read and execute directives are permitted. For example, create or modify a custom signature to protect an Excel spreadsheet containing an employee list and contact information from being deleted.
- HTTP type—prevents an illegal request to your web server. For example, create or modify a custom signature to prevent your web server from receiving a request that corrupts the server.
- Registry type—prevents modifying a registry. Only read, enumerate, and monitor directives are allowed. For example, create or modify a custom signature to prevent modifications to browser settings for cookies.
- Service type—prevents stopping a service. Only start and continue directives are allowed. For example, create or modify a custom signature to protect Telnet services from stopping.