Vi editor has some special features such as Vi modes and syntax highlighting that makes it powerful than other text editors. It is also termed as programmer's editor because most programmers prefer Vi editor. It is a user-friendly editor and provides the same environment for all the Linux distros. It has enhanced functionalities of the old Unix Vi editor. By default, it is supported by most Linux distros. Vim editor is one of the most used and powerful command-line based editor of the Linux system. This will help you with selecting the editor of your choice. Further, we will talk about the latest text editors and will compare them with the traditional text editors such as Vi and nano. In this section, we are going to discuss the top 20 text editors for Linux. A text editor should not only be simple but also functional and should be good to work with.Ī text editor with IDE features is considered as a good text editor. So, it is important to select the best text editor. GUI text editors such as gedit (for Gnome), Kwrite, and more.Ī text editor plays an important role while coding.Command-line text editors such as Vi, nano, pico, and more.There are two types of text editors in Linux, which are given below:
A Linux system supports multiple text editors. Some firewalls may require allowing traffic to the public IP address of the machine running SSH.Linux text editors can be used for editing text files, writing codes, updating user instruction files, and more. The default firewall configurations tool in Ubuntu is UFW, configure it with the command: sudo ufw allow from any to any port 2222 proto tcp If you have decided to change the default port number, you must configure your firewall to allow traffic via the specified port. For the changes to take into effect, restart SSH with the following command: sudo systemctl restart rvice Configure Firewall After you have made the desired changes, save and close the file by using the CTRL+W keyboard shortcut (or the commands to save and close in your editor of choice).ģ. In the configuration file, find the line that reads PermitRootLogin_yesand change it to PermitRootLogin_no.Ģ. That way, the root user cannot be invoked remotely, and security will be significantly improved.ġ. Disable RootĪnother critical security precaution is to make sure that the root is disabled. Everyone is aware of the default port number so changing it is a recommended security precaution. Important: Changing the default port number is an SSH security best practice. Open your SSH configuration file with the command: sudo gedit /etc/ssh/sshd_config You can change the default port (generally a good idea, as a precautionary security measure), disable the “root ” user or make other configuration adjustments.ġ. SSH Configuration Options Edit Configuration FileĪfter successfully installing OpenSSH on Ubuntu, you can edit its configuration file.
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You are free to manage it from the comfort of your workstation safely. Once you have identified and typed in all the information, you have officially logged into your server. This should display the public IP address of the machine where SSH was installed. If you do not know the IP address, you can quickly identify it through the terminal by typing the command: ip a Open the terminal ( CTRL+ALT+T) and type the following command: ssh _IP – p222Ĭhange the username and IP address to the username and IP address of the Ubuntu computer on which you have installed SSH.Ģ. Once you have gone through the process of enabling SSH on Ubuntu 18.04, you are ready to log into your remote machine.ġ. To return to the command line prompt enter q.
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