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DigitalOcean SSH

Using DigitalOcean Droplet on PuTTY ssh client

This article covers how to use Putty on the Digitalocean platform. In fact, DigitalOcean Droplets are Linux-based virtual machines (VMs) that run on top of virtualized hardware. Each Droplet you create is a new server you can use, either standalone or as part of a larger, cloud-based infrastructure.


How to Destroy a Droplet from the DigitalOcean Control Panel ?

Deleting a Droplet permanently and irreversibly destroys the Droplet and its contents, and its automated backups. Optionally, you can also destroy a Droplet and its associated snapshots, volumes, and volume snapshots. 

  • To save one or more of the backup images, convert the backup into a snapshot before deleting the Droplet.
  • To destroy a Droplet from the control panel, open the Droplet's More menu and click Destroy. Alternately, you can click the Droplet's name to access its main page and select Destroy from the left menu.
  • On the Destroy page, there are two headings: Destroy Droplet and backups and Rebuild Droplet. Under Destroy Droplet and backups, you can choose to destroy the Droplet and its backups. If the Droplet has associated resources, you can also choose to delete some or all of them, but they are not destroyed by default.
  • If you wish to retain a backup, you must convert it to a snapshot before deleting it. Any associated reserved IP addresses, load balancers, or firewalls still need to be deleted individually.

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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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