This script is Copyright (C) 2009-2013 Tenable Network Security, Inc.
The remote web server is protected by a web application firewall.
By analyzing error codes and messages returned from some web queries,
Nessus is able to determine that the remote web server is protected by a
web application firewall.
Such protection may disrupt scan results. Countermeasures have been
taken to make the scan as reliable as possible.
To get a more comprehensive set of scan results, either whitelist the
Nessus server's IP address or scan from an unprotected location.
Risk factor :