How To Install stealth on Ubuntu 18.04
Introduction
In this tutorial we learn how to install stealth on Ubuntu 18.04.
What is stealth
stealth is:
The STEALTH program performs File Integrity Checks on (remote) clients. It differs from other File Integrity Checkers by not requiring baseline integrity data to be kept on either write-only media or in the client’s file system. In fact, clients will hardly contain any indication suggesting that they are being monitored, thus improving the stealthiness of the integrity scans.
STEALTH uses standard available software to perform file integrity checks (like find(1) and sha1sum(1)). Using individualized policy files, it is highly adaptable to the specific characteristics of its clients.
In production environments STEALTH should be run from an isolated computer
(called the STEALTH monitor'). In optimal configurations the STEALTH monitor should be a computer not accepting incoming connections. The account used to connect to its clients does not have to be root’; usually
read-access to the client’s file system is enough to perform a full integrity
check. Instead of using `root’ a more restrictive administrative or
ordinary account might offer all necessary requirements for the desired
integrity check.
STEALTH itself must communicate with the computers it should monitor. It is essential that this communication is secure. STEALTH configurations therefore normally specify SSH as the command-shell to use for connecting to clients. STEALTH may be configured so as to use but one SSH connection per client, even if integrity scans are to be performed repeatedly. Apart from this, the STEALTH monitor is commonly allowed to send e-mail to remote client systems’ maintainers.
STEALTH-runs itself may start randomly within specified intervals. The resulting unpredicability of STEALTH-runs further increases STEALTH’s stealthiness.
STEALTH’s acronym is expanded to `Ssh-based Trust Enforcement Acquired through a Locally Trusted Host’: the client’s trust is enforced, the locally trusted host is the STEALTH monitor.
There are three methods to install stealth on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install stealth Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install stealth using apt-get by running the following command:
sudo apt-get -y install stealth
Install stealth Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install stealth using apt by running the following command:
sudo apt -y install stealth
Install stealth Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install stealth using aptitude by running the following command:
sudo aptitude -y install stealth
How To Uninstall stealth on Ubuntu 18.04
To uninstall only the stealth package we can use the following command:
sudo apt-get remove stealth
Uninstall stealth And Its Dependencies
To uninstall stealth and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove stealth
Remove stealth Configurations and Data
To remove stealth configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge stealth
Remove stealth configuration, data, and all of its dependencies
We can use the following command to remove stealth configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge stealth
References
Summary
In this tutorial we learn how to install stealth package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
