how to SSH into a linux server

In this article, we cover how to connect to a server over SSH. Whether it is a physical or a virtual server, you can connect to it from anywhere in the world through SSH. Here is how to SSH into a Linux server.

If you are connecting from a Linux or Unix-based system, you do not need any third-party application. Simply type the command below:

ssh user@ip, for example: ssh root@2.2.2.2

As with Windows Remote Desktop, you must specify the port number if the default port (22) has been changed.

If you use Windows to SSH into a Linux server, you need an additional program such as PuTTY. Enter the IP address and port in the program, as shown in the picture below. Once the connection is made, enter your username and password to get the terminal.

Errors caused by network setup and firewalls are the same as on Windows, and you can troubleshoot them the same way: use the ping and traceroute commands, and stop the firewall or SELinux on the destination server.

Unlike Windows, however, Linux has some SSH-specific errors. For example, an SSH key encryption type may not be supported on the latest OS versions, or you may get permission denied because a normal Linux user has no SSH privilege by default.

A user must be given permission to SSH into the server, especially on Ubuntu servers. For some other errors, the easiest workaround is to try a different SSH client.

Finally, if the steps above do not solve your problem, contact your hosting provider. AVANETCO customers can open a ticket with our free 24/7 technical support.