How To Install pam_ssh_user_auth on CentOS 8
Introduction
In this tutorial we learn how to install pam_ssh_user_auth on CentOS 8.
What is pam_ssh_user_auth
pam_ssh_user_auth checks the value of SSH_AUTH_INFO_0 and will return success if is non-empty and failure if it is. It can be used to skip other PAM authentication methods with a configuration like auth [success=1 ignore=ignore default=die] pam_ssh_user_auth.so auth substack password-auth
We can use yum or dnf to install pam_ssh_user_auth on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install pam_ssh_user_auth.
Install pam_ssh_user_auth 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 pam_ssh_user_auth using dnf by running the following command:
sudo dnf -y install pam_ssh_user_auth
Install pam_ssh_user_auth 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 pam_ssh_user_auth using yum by running the following command:
sudo yum -y install pam_ssh_user_auth
How To Uninstall pam_ssh_user_auth on CentOS 8
To uninstall only the pam_ssh_user_auth package we can use the following command:
sudo dnf remove pam_ssh_user_auth
pam_ssh_user_auth Package Contents on CentOS 8
/lib64/security/pam_ssh_user_auth.so
/usr/lib/.build-id
/usr/lib/.build-id/79
/usr/lib/.build-id/79/f24816cfba4a5aa92ecf44f9a9ea0949bc3a0d
/usr/share/doc/pam_ssh_user_auth
/usr/share/doc/pam_ssh_user_auth/README.md
/usr/share/licenses/pam_ssh_user_auth
/usr/share/licenses/pam_ssh_user_auth/COPYING
References
Summary
In this tutorial we learn how to install pam_ssh_user_auth on CentOS 8 using yum and dnf.