Free tool that detects Netgear switches
Nsdtool developed by Curesec is a toolset of scripts used to detect netgear switches in local networks. The tool contains some extra features like brute-force and setting a new password. Curesec provides companies and the public information about benefits, risks and activities related to IT security.
Read more and download the tool from here - http://www.curesec.com/en/publications/tools.html