An Easy Way To Simulate TCP and UDP Servers on Linux

Here is a quick tutorial on simulating TCP and UDP servers on any Linux OS of your choice.

Using NetCat (NCat)

You can create a TCP/UDP server listening on any port of your choice (say 30000) using below one-liners.

// For TCP
$ nc -l 31000

// For UDP
$ nc -u -l 30000

If you need to install NetCat or verify that the server is listening on the given port, read here

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✅ Tested OS's	: RHEL 7+, CentOS 7+, Ubuntu 18.04+, Debian 8+
✅ Tested Gear	: Cloud (AWS EC2), On-Prem (Bare Metal)

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👉 Any questions? Please comment below.

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