<p>SSH is one of the most trusted tools in cyber security offering software solutions for privileged access, secure file transfers &amp; more. In this write-up, we will install the OpenSSH server in Ubuntu.</p>
<h1 id="heading-install-ssh-package">Install ssh package</h1>
<pre><code>$ sudo apt <span class="hljs-keyword">update</span>
$ sudo apt <span class="hljs-keyword">install</span> openssh-<span class="hljs-keyword">server</span> -y
</code></pre><h1 id="heading-verify-ssh-status">Verify SSH status</h1>
<pre><code>$ sudo systemctl status ssh
</code></pre><h1 id="heading-allow-ssh-connections">Allow SSH Connections</h1>
<pre><code>$ sudo ufw allow ssh
</code></pre><p>This will create firewall rules that allow all connections on <strong>port 22</strong>, which is the port that the SSH daemon listens on by default. ufw knows the allowed port for ssh because it is listed as a service in the <strong>/etc/services</strong> file.</p>
<p>If you configured your SSH daemon to use <strong>different port</strong>, you will have to specify it. For example, if your SSH server is configured to listen on <strong>port 2222</strong>, you can use this command the following command:</p>
<pre><code>$ sudo ufw allow <span class="hljs-number">2222</span>
</code></pre><h1 id="heading-save-ufw-changes">Save ufw changes</h1>
<pre><code>sudo ufw enable <span class="hljs-operator">&amp;</span><span class="hljs-operator">&amp;</span> sudo ufw reload
</code></pre><h1 id="heading-conclusion">Conclusion</h1>
<p>And that's it, now you have the possibility to access another machine through your terminal by simply typing the following command:</p>
<pre><code>$ ssh [hostname]@[ip<span class="hljs-operator">-</span><span class="hljs-keyword">address</span>]
</code></pre><p>where:</p>
<p>hostname = hostname of target machine.</p>
<p>ip-address = ip of target machine.</p>


SSH is one of the most trusted tools in cyber security offering software solutions for privileged access, secure file transfers & more. In this write-up, we will install the OpenSSH server in Ubuntu.

# Install ssh package


```
$ sudo apt update
$ sudo apt install openssh-server -y
``` 

# Verify SSH status


```
$ sudo systemctl status ssh
``` 

# Allow SSH Connections


```
$ sudo ufw allow ssh
``` 

This will create firewall rules that allow all connections on **port 22**, which is the port that the SSH daemon listens on by default. ufw knows the allowed port for ssh because it is listed as a service in the **/etc/services** file.

If you configured your SSH daemon to use **different port**, you will have to specify it. For example, if your SSH server is configured to listen on **port 2222**, you can use this command the following command:


```
$ sudo ufw allow 2222
``` 

# Save ufw changes


```
sudo ufw enable && sudo ufw reload
``` 

# Conclusion

And that's it, now you have the possibility to access another machine through your terminal by simply typing the following command:


```
$ ssh [hostname]@[ip-address]
``` 
where:

hostname = hostname of target machine.

ip-address = ip of target machine.








How to Enable and Use SSH on Ubuntu

Install ssh package

Verify SSH status

Allow SSH Connections

Save ufw changes

Conclusion