Once Request Tracker 4 is installed on Debian 7, there is one more thing to do.

Small change in Apache configuration to make RT4 website to work.

First edit Apache configuration file:

root@hostname:~# vi /etc/apache2/sites-available/default

Then add to that file (at the end):

Include /etc/request-tracker4/apache2-modperl2.conf
RedirectMatch ^/$ /rt
</VirtualHost>