Port Scanning with JavaScript
SPI Dynamics.com - Security Brief

This is a proof of concept page for port scanning arbitrary IP addresses from JavaScript. Given a range of IP addresses, the scanner will detect if there is a host running at that IP. It will then look for a web server running on port 80 and try to fingerprint what kind of web server it is. Only fingerprinting of Microsoft IIS and Apache are currently supported. If the scanner cannot fingerprint the server will report it as "Unknown webserver."This page will not automatically scan your network, will not attack any hosts it discovers, and will not report any information about your network back to SPI Dynamics.

Known issues with the scanner.

IP To Start:
IP To End:

IP Host Exists? Webserver