PortCheck v2.0
Check network service connectivity with Mike Volodarsky`s PortChecker tool. If you are unable to connect to a particular TCP service, such as a web server, ftp server, or anything else, you may be experiencing a number of both network and service connectivity problems, PortChecker is here to help!
Mike Volodarsky put together a little tool that can tests TCP connectivity to the specific port on the target machine, something that the PING command cannot do. You can use it to determine whether IIS is listening on a particular ip/port and whether you can get to it – or test connectivity to any arbitrary TCP services (since it will expose DNS, network connectivity, lack of active listening connections), such as SQL Server. Note that the tool doesn’t do any application protocol specific communication (such as making an HTTP request) – it simply establishes a TCP connection and closes it.
