GEN:SID 1:2157
Message WEB-IIS IISProtect globaladmin.asp access
Summary This event is generated when an attempt is made to access the administration interface of IISProtect on a host running Microsoft Internet Information Server (IIS).
Impact Administrator access.
Detailed Information This event indicates that an attempt has been made to access the administration interface of IISProtect on a host running Microsoft Internet Information Server (IIS).

The attacker can gain administrator access to the web server running IISProtect without the need to authenticate.
Affected Systems Any host using IISProtect.
Attack Scenarios An attacker can gain control of the web server without the need to authenticate.
Ease of Attack Simple.
Corrective Action Upgrade to the latest non-affected version of the software.

Check the IIS implementation on the host. Ensure all measures have been taken to deny access to sensitive files.

Ensure that the IIS implementation is fully patched.

Ensure that the underlying operating system is fully patched.

Employ strategies to harden the IIS implementation and operating system.

Check the host for signs of compromise.
Additional References  
Rule References nessus: 11661