Verifying ports are listening

Written by on Tuesday, March 4, 2008 5:24 - 0 Comments

How to determine if a server is listening on a given port.

In the old days of server troubleshooting, we used to use Telnet to check whether our SMTP server was listening on port 25, our HTTP server was listening on port 80, and so on. Open a Telnet session and type a few appropriate commands and you’d get a response (or not). Nowadays however we have LDAP ports and all kinds of ports and who knows what commands these ports respond to? How can you verify then whether a particular port is listening or not on a server? PortQry 2.0 is your friend, check it out at ')}

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