proxyScan.pl is a security penetration testing tool to scan for hosts and ports through a Web proxy server. Features include various HTTP methods such as GET, CONNECT, HEAD as well as host and port ranges.
You can download it from the following link: https://packetstormsecurity.com/files/download/69778/proxyScan-0.3.tgz
Source: https://packetstormsecurity.com/files/69778/proxyScan-0.3.tgz.html