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            <h1>Let's Install Pi.Alert - A Network Intrusion Monitor</h1>
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          <h2>What is Pi.Alert?</h2>

<blockquote><em>[Pi.Alert is a] WIFI / LAN intruder detector. Check the devices connected and alert you with unknown devices. It also warns of the disconnection of &quot;always connected&quot; devices. -<a href="https://github.com/pucherot/Pi.Alert/" target="_blank">https://github.com/pucherot/Pi.Alert/</a></em></blockquote>

<h2>Installing Pi.Alert</h2>

<ol>
	<li>Log into the Debian/Ubuntu device</li>
	<li>Launch a terminal and run the following commands
	<div class="codeBlock"># update software repositories<br />
	sudo apt update<br />
	# install available software updates<br />
	sudo apt upgrade -y<br />
	# install prerequisites<br />
	sudo apt install apt-utils arp-scan dnsutils net-tools python3 -y<br />
	# install web/db components<br />
	sudo apt install lighttpd php php-cgi php-fpm php-sqlite3 sqlite3 -y<br />
	# clean apt package cache<br />
	sudo apt clean<br />
	# download the latest release<br />
	wget -O ./pialert.tar https://github.com/pucherot/Pi.Alert/raw/main/tar/pialert_latest.tar<br />
	# create target directory<br />
	sudo mkdir /var/www/pialert<br />
	# create logs directory<br />
	sudo mkdir /var/log/pialert<br />
	# extract the downloaded tar to /var/www/pialert<br />
	sudo tar xf ./pialert.tar -C /var/www/pialert --strip-components=1<br />
	# set the owner of the pialert directory<br />
	sudo chown -R www-data:www-data /var/www/pialert<br />
	# update pialert path in conf file<br />
	sed -i &#39;s/\/home\/pi\/pialert/\/var\/www\/pialert/&#39; /var/www/pialert/config/pialert.conf<br />
	# update pialert path in cron jobs<br />
	sed -i &#39;s/python ~\/pialert\/back\/pialert.py/python3 \/var\/www\/pialert\/back\/pialert.py/g&#39; /var/www/pialert/install/pialert.cron<br />
	# update log paths for cron jobs<br />
	sed -i &#39;s/~\/pialert\/log\//\/var\/log\/pialert\//g&#39; /var/www/pialert/install/pialert.cron<br />
	# create cronjob schedule<br />
	(crontab -l 2&gt;/dev/null; cat /var/www/pialert/install/pialert.cron) | sudo crontab -<br />
	# create symbolic link to pialert<br />
	sudo ln -s /var/www/pialert/front/ /var/www/html/pialert<br />
	# copy pialert lighttpd conf<br />
	sudo cp /var/www/pialert/install/pialert_front.conf /etc/lighttpd/conf-available<br />
	# enable the pialert conf<br />
	sudo ln -s /etc/lighttpd/conf-available/pialert_front.conf /etc/lighttpd/conf-enabled/pialert_front.conf<br />
	# enable lighttpd fastcgi<br />
	sudo lighttpd-enable-mod fastcgi-php<br />
	# restart lighttpd service<br />
	sudo systemctl restart lighttpd</div>
	</li>
	<li>Open a web browser and navigate to http://DNSorIP/pialert</li>
	<li>Welcome to Pi.Alert<br />
	<span style="font-size:12px;"><em>NOTE: By default, Pi.Alert cron job runs every 5 minutes to check for new devices on the network</em></span></li>
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