How To Install Ssh Server On Linux?
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1. Update your system: Before you install any services or applications on your Linux system, it’s important to make sure that all of your software is up to date. To do so, issue the following command:
sudo apt-get update
2. Install OpenSSH Server: To install the OpenSSH server package, issue the following command:
sudo apt-get install openssh-server
3. Configure OpenSSH Server: Once the installation is complete, you will need to configure the OpenSSH server. This can be done by editing the /etc/ssh/sshd_config file.
4. Start the OpenSSH Server: Once you have finished configuring the server, you can start it by issuing the following command:
sudo /etc/init.d/ssh start
5. Check if the Server is Running: To check if the server is running, you can use the following command:
sudo netstat -anp | grep ssh
If the server is running, the command should return something similar to this:
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 631/sshd
This indicates that the OpenSSH server is running successfully.
1. Update your server
Before installing SSH, it is important to update your server’s packages and the underlying operating system. To do this, run the following command:
sudo apt-get update && sudo apt-get upgrade -y
2. Install OpenSSH
Once you’ve updated your server, you can install OpenSSH. This is the default SSH implementation for Linux servers. To install it, use the following command:
sudo apt-get install openssh-server
3. Configure the SSH Service
Now that you’ve installed OpenSSH, you should configure it. To do this, open the SSH configuration file in a text editor with root privileges:
sudo nano /etc/ssh/sshd_config
The most important change to make is to disable root login. This will prevent malicious actors from directly logging into your server as root.
To do this, change the line which reads “PermitRootLogin yes” to “PermitRootLogin no”.
You should also change the port that SSH listens on if you’re concerned about malicious attempts to guess your root password by systematically trying default port numbers.
4. Restart SSH
After making changes to your SSH configuration, you need to restart the SSH service for the changes to take effect. To do this, run the following command:
sudo systemctl restart ssh
Your SSH server should now be up and running. You can test it by using the ssh command from another computer on the same network.
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