Explore information related to ssh


Enable SSH on Ubuntu 20.04 - Step by step guide ?

This article covers how to enable ssh on Ubuntu 20.04 LTS Linux system. In fact, the idea behind using SSH is to establish a secure connection with another computer in the network. However, the remote computer must have a running SSH server, otherwise, we won't be able to connect it using command or SSH client from our local computer.


How to Generate Public and Private Keys for SSH ?

  • Open command line- Terminal or Prompt on your local system.
  • Enter SSH key generator command that will generate the  key ssh-keygen.
  • Hit the Enter key.
  • (optional) Then you can enter a password in order to add an additional barrier when establishing the connection. Otherwise, simply press the Enter key two times, if you don't want the system to ask for an additional password query.
  • Ultimately, two files are created in the hidden directory ".ssh" under your user directory: "id_rsa" and "id_rsa.pub". The "rsa" in the file name stands for the cryptography used, but you don't have to worry about it. The file extension "pub" stands for "Public", so it is the public key. Whereas the file without any extension is your private key.

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ssh-keygen Command in Ubuntu 20.04 LTS Linux server - Explained with examples

This article covers how to generate different types of keys like RSA, DSA for authentication and connect to the different remote servers by copying the public key to the $HOME/.ssh/authorized_keys file of the remote server.

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Enable SSH on openSUSE Leap 15.3 - Step by step guide ?

This article covers how you can enable SSH on your openSUSE system. In fact, after enabling the SSH server, it is important to secure your SSH server to avoid various security risks. 


How to install  and enable FirewallD on openSUSE system ?

Run the following zypper command:

$ sudo zypper ref
$ sudo zypper update
$ sudo zypper install firewalld

Enable the firewall at boot time using the systemctl command:

$ sudo systemctl enable firewalld

Start the firewall on OpenSUSE Linux:

$ sudo systemctl start firewalld

Get status of your firewall:

$ sudo systemctl status firewalld

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Configure a Custom SSH Banner - Step by step guide ?

This article covers How to Set a Custom SSH Warning Banner and MOTD in Linux. In fact, SSH banner warnings are necessary when companies or organizations want to display a stern warning to discourage unauthorized parties from accessing a server.

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Install Muon / Snowflake Graphical SSH Client on Ubuntu 20.04 LTS - Step by step guide ?

This article covers the different ways of installing Muon/Snowflake on your Ubuntu machine. 


Snowflake's functionalities includes:

  • A simple GUI interface that allows to cut, copy, paste, rename, archive, execute scripts, check directory size, change permissions, etc.
  • Text editor which also supports sudo.
  • Powerful search functionality.
  • Log viewer.
  • Disk space analyzer.
  • Handy network tools (ping, Traceroute, port check, etc).
  • SSH Key management.
  • Terminal emulator.

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Methods to disable root account in Ubuntu 20.04 LTS Linux system

This article covers the different ways of disabling the root login in Linux. In fact, You should disable the root account and use sudo for administrative tasks because it's more secure than using su. This way, you only have to remember one password on your Linux system.

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