Just needed to get to know whether something listens at a certain TCP port on a particular host.

Here is my workaround using Perl:

Works at least for me. Any concerns or better solutions?

Do you like this page?
You can actively support me!

## 1 comment

rocky | Permalink |

Two alternatives come to mind. First use telnet with a port number. For example (using values in your example):

telnet 1.2.3.4 1337

You’ll have to know how to close the connection if there is a “Connected” message.

Second use nmap which is something sysadmins should get very familiar with. Here:

nmap 1.2.3.4