How To Install endlessh on CentOS 8
Introduction
In this tutorial we learn how to install endlessh on CentOS 8.
What is endlessh
Endlessh is an SSH tarpit that very slowly sends an endless, random SSH banner. It keeps SSH clients locked up for hours or even days at a time. The purpose is to put your real SSH server on another port and then let the script kiddies get stuck in this tarpit instead of bothering a real server.
We can use yum or dnf to install endlessh on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install endlessh.
Install endlessh on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install endlessh using dnf by running the following command:
sudo dnf -y install endlessh
Install endlessh on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install endlessh using yum by running the following command:
sudo yum -y install endlessh
How To Uninstall endlessh on CentOS 8
To uninstall only the endlessh package we can use the following command:
sudo dnf remove endlessh
endlessh Package Contents on CentOS 8
/etc/endlessh
/etc/endlessh/config
/usr/bin/endlessh
/usr/lib/.build-id
/usr/lib/.build-id/ae
/usr/lib/.build-id/ae/2ee5282ae66c25cedd82e987089801247a1a81
/usr/lib/systemd/system/endlessh.service
/usr/share/doc/endlessh
/usr/share/doc/endlessh/README.md
/usr/share/licenses/endlessh
/usr/share/licenses/endlessh/UNLICENSE
/usr/share/man/man1/endlessh.1.gz
References
Summary
In this tutorial we learn how to install endlessh on CentOS 8 using yum and dnf.