By default it’s alias: you-domain.com/nagios3 and to do it as standalone site follow below instruction… a2disconf nagios3 ln -s /etc/nagios3/apache2.conf /etc/apache2/sites-enabled/your-domain.com.conf modify this file to look like: <VirtualHost *:80> ServerAdmin webmaster@example.com ServerName nagios.example.com ScriptAlias /cgi-bin/nagios3 /usr/lib/cgi-bin/nagios3/ Alias /stylesheets /etc/nagios3/stylesheets/ Alias / /usr/share/nagios3/htdocs/ DocumentRoot /usr/share/nagios3/htdocs/ <DirectoryMatch (/usr/share/nagios3/htdocs|/usr/lib/cgi-bin/nagios3|/etc/nagios3/stylesheets)> Options FollowSymLinks DirectoryIndex index.php index.html AllowOverride AuthConfig Order Allow,Deny Allow From All … Continue reading nagios3 as website