How To Install openssh on CentOS 7

In this tutorial we learn how to install openssh on CentOS 7. openssh is An open source implementation of SSH protocol versions 1 and 2

Introduction

In this tutorial we learn how to install openssh on CentOS 7.

What is openssh

SSH (Secure SHell) is a program for logging into and executing commands on a remote machine. SSH is intended to replace rlogin and rsh, and to provide secure encrypted communications between two untrusted hosts over an insecure network. X11 connections and arbitrary TCP/IP ports can also be forwarded over the secure channel. OpenSSH is OpenBSD’s version of the last free version of SSH, bringing it up to date in terms of security and features. This package includes the core files necessary for both the OpenSSH client and server. To make this package useful, you should also install openssh-clients, openssh-server, or both.

We can use yum or dnf to install openssh on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install openssh.

Install openssh on CentOS 7 Using yum

Update yum database with yum using the following command.

sudo yum makecache

After updating yum database, We can install openssh using yum by running the following command:

sudo yum -y install openssh

Install openssh on CentOS 7 Using dnf

If you don’t have dnf installed you can install DNF on CentOS 7 first. Update yum database with dnf using the following command.

sudo dnf makecache

After updating yum database, We can install openssh using dnf by running the following command:

sudo dnf -y install openssh

How To Uninstall openssh on CentOS 7

To uninstall only the openssh package we can use the following command:

sudo dnf remove openssh

References

Summary

In this tutorial we learn how to install openssh on CentOS 7 using yum and dnf.