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#Install openssh server ubuntu 20.04 how to#
#Install openssh server ubuntu 20.04 install#
#Install openssh server ubuntu 20.04 password#

For example, a Raspberry Pi running Ubuntu server. Generally, you have a dedicated system working as the server.

You might not want your personal computer to act as SSH server unless you have good reasons where you want others to connect to your system via SSH. It is important to keep a distinction between the server and client. This is provided by openssh-client package and most Linux and BSD distributions come preinstalled with it.

Have SSH client component on the machine from where you want to connect to the remote server machine.

This is provided by openssh-server package.

Have SSH server components on the machine that acts as the server.

This channel is encrypted and the exchange is governed by the use of public and private SSH keys.įor a successful SSH set up, you need to: The “server” allows the “client” to be connected over a communication channel. The SSH protocol is based on server-client architecture.

Connecting to remote server via SSH from the client machine (your personal computer)īefore you see any configuration process, it will be better to go through the absolute basic concept of SSH.

Setting up SSH server (on the system you want to access remotely).

And let’s not forget the secure part of its name SSH encrypts all traffic to prevent attacks like hijacking and eavesdropping while offering different authentication methods and a myriad of configuration options. SSH stands for Secure Shell and it’s a powerful, efficient, and popular network protocol used to establish communication between two computers in a remote fashion.

#Install openssh server ubuntu 20.04 password#

You will be asked for the user’s password and that’s it.SSH has become the default method of accessing a remote Linux server these days. To connect and make use of SSH, on the client computer with some Linux distribution, execute the following command: ssh example: ssh When you finish your changes, save the file and close the editor. You can even limit the number of sessions that can be run at the same time: MaxSessions 4 Or the number of authentication attempts: MaxAuthTries 3 It is also recommended to disable root access to SSH. ListenAddress 0.0.0.0Ĭhange 0.0.0.0 to the value of the IP you want. You can also restrict access to a set of IP addresses. A good security measure is to change it to whatever you want. As I mentioned before, the default port is 22. The file is very well documented, it’s quite easy to follow. sudo nano /et/ssh/sshd_config enabling and configuring SSH on Ubuntu 20.04 So, open it with the nano text editor and you will see content similar to this. The SSH configuration file is /etc/ssh/sshd_config SSH is ready, but some security adjustments should be made. However, to further protect the connection, SSH must be configured by modifying the SSH configuration file.

Using the systemctl command we can make a check of the SSH status: sudo systemctl status sshd SSH statusĪccording to this screen output, SSH is active and ready to use. When the installation is complete, SSH will be enabled by the default port 22.

#Install openssh server ubuntu 20.04 install#

So open a terminal and install the openssh package sudo apt install openssh-server However, the package that allows us to make an SSH server which is the one we need to allow remote connections is not included. Generally, Ubuntu’s modern facilities already have SSH by default.

#Install openssh server ubuntu 20.04 how to#

Whether you have a professional or a home server, it’s a good idea to know how to enable SSH on Ubuntu. This guarantees that the orders will reach their destination. This guarantees that everything we do in a session is secure.Įqually, SSH uses the TCP protocol for communication. In a few words, SSH (Secure Shell) is used to access remote machines, similar to the old Telnet, but securely because the connection is encrypted. Especially when we talk about servers and remote administration. SSH is one of the most common tools in the Linux world. In this post, you will learn how to enable SSH on Ubuntu 20.04 so that at the end of this post, you will be able to remotely access the computer.