tldr/pages/linux/ncat.md

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# 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}}`