How To Install testssl on CentOS 8
Introduction
In this tutorial we learn how to install testssl on CentOS 8.
What is testssl
testssl.sh is a free command line tool which checks a server’s service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.
We can use yum or dnf to install testssl on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install testssl.
Install testssl 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 testssl using dnf by running the following command:
sudo dnf -y install testssl
Install testssl 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 testssl using yum by running the following command:
sudo yum -y install testssl
How To Uninstall testssl on CentOS 8
To uninstall only the testssl package we can use the following command:
sudo dnf remove testssl
testssl Package Contents on CentOS 8
/usr/bin/testssl
/usr/share/doc/testssl
/usr/share/doc/testssl/CHANGELOG.md
/usr/share/doc/testssl/Readme.md
/usr/share/licenses/testssl
/usr/share/licenses/testssl/LICENSE
/usr/share/man/man1/testssl.1.gz
/usr/share/testssl
/usr/share/testssl/etc
/usr/share/testssl/etc/README.md
/usr/share/testssl/etc/ca_hashes.txt
/usr/share/testssl/etc/cipher-mapping.txt
/usr/share/testssl/etc/client-simulation.txt
/usr/share/testssl/etc/common-primes.txt
/usr/share/testssl/etc/tls_data.txt
References
Summary
In this tutorial we learn how to install testssl on CentOS 8 using yum and dnf.