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        <title>Add A Firewall to Debian Linux with UFW</title>
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            <h1>Add A Firewall to Debian Linux with UFW</h1>
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          <h2>What is UFW?</h2>

<blockquote><em>The Uncomplicated Firewall (ufw, and gufw - a Graphical User Interface version of the same) is a frontend for iptables and is particularly well-suited for host-based firewalls. Ufw provides a framework for managing netfilter, as well as a command-line interface for manipulating the firewall. -<a href="https://wiki.debian.org/Uncomplicated%20Firewall%20%28ufw%29" target="_blank">https://wiki.debian.org/Uncomplicated%20Firewall%20%28ufw%29</a></em></blockquote>

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	<li>Log into the Debian device</li>
	<li>Run the following commands in a terminal window:
	<div class="codeBlock"># update software repositories<br />
	sudo apt update<br />
	# install ufw<br />
	sudo apt install ufw -y<br />
	# enable ufw<br />
	sudo ufw enable<br />
	# output the ufw status<br />
	sudo ufw status<br />
	# add some default firewall rules<br />
	sudo ufw default deny incoming<br />
	sudo ufw default allow outgoing<br />
	# if a webserver is running, allow the incoming traffic<br />
	sudo ufw allow 80/tcp<br />
	sudo ufw allow 443/tcp<br />
	# to allow incoming ssh connections, open port 22<br />
	sudo ufw allow 22/tcp<br />
	# output the ufw status<br />
	sudo ufw status<br />
	# to install a graphical user interface for ufw, install gufw<br />
	sudo apt install gufw -y</div>
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