ncat

Read, write, redirect, and encrypt data across a network. An alternative implementation of a similar utility called netcat/nc. More information: https://nmap.org/ncat/guide/index.html.

• Listen for input on the specified port and write it to the specified file:

ncat -l port > path/to/file

• Accept multiple connections and keep ncat open after they have been closed:

ncat -lk port

• Write output of specified file to the specified host on the specified port:

ncat address port < path/to/file

• Accept multiple incoming connections on an encrypted channel evading detection of traffic content:

ncat --ssl -k -l port

• Connect to an open ncat connection over SSL:

ncat --ssl host port

• Check connectivity to a remote host on a particular port with timeout:

ncat -w seconds -vz host port