echoping software package provides Small test tool for TCP servers, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install echoping
echoping is installed in your system.
Make ensure the echoping package were installed using the commands given below,
$ sudo dpkg-query -l | grep echoping *
You will get with echoping package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Network |
| Package | echoping |
| Version | 6.0.2-9 |
| Description | Small test tool for TCP servers |
| Sub Section | Net |