autolog software package provides Terminates connections for idle users, 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 autolog
autolog is installed in your system.
Make ensure the autolog package were installed using the commands given below,
$ sudo dpkg-query -l | grep autolog *
You will get with autolog package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Administration Utilities |
| Package | autolog |
| Version | 0.40-13.1 |
| Description | Terminates connections for idle users |
| Sub Section | admin |