OpenSSH server helps you to remotely log in to your computer through a secure encrypted way using Secure Shell(SSH).
It was first developed by Tatu Ylonen and now openSSH is part of OpenBSD operating Systems.
We will guide how to install openSSH server and use it in your system.
How to install the OpenSSH server in Ubuntu?
You just need to follow step by step method to install openssh server in your ubuntu.
First you have to open Ubuntu terminals and pass commands into terminals
Update the repositories
sudo apt-get update sudo apt-get upgrade
Now install openssh-server package
sudo apt-get install openssh-server
After getting install you need to check whether ssh is running
sudo systemctl status ssh
If status is not running then enable the ssh server
sudo systemctl enable ssh
Then start the ssh service by passing command
sudo systemctl start ssh
Installation is completed now you can test logging through connecting remote ssh server from you MS-Windows putty,mac-os, Linux, or any ssh client.
You have to even open port no 22 for ssh
If a port 22 is closed then connection will get reject.To prevent this you have to enable through ufw
Open Terminals and type few commands
Check ufw firewall is enable or disable
sudo ufw status
If it is enabled check the ssh port is not block, in case of disable or block then pass this commnad
sudo ufw allow ssh
After this enable ufw if it is disable
sudo ufw enable
Now check the status wheter ssh or port no 22 is allow
sudo ufw status
Now you are ready to use.
In few step you are ready to use OpenSSH server,just make sure that ssh port is enable in UFW Firewall.
There are many options in ssh, if you want to know more about the ssh server how we can use ssh in full-fledged then comment it.
If you want to connect through passwordless that also you can do for that you have to make ssh key
After that you can login without passing password to system every time..
For this part i’ll make a dedicated article very soon.