404 not found error

After copying drupal content to the httpdocs  the site was behaving not as needed so got rid of the drupal content and with the initial set of file was getting "404 not found error"
The requested URL / was not found on this server.

referring the /var/log/apache2/error.log showed
[mon Mar 01...][error][client 192.168.1.2] file does not exist: /var/www/gnumen.net

after having a look in /etc/apache2/site-available

It was a simple task of accesssing the webpage from different box in a lan env, but for some crappy reason the wa3002g4 router won't allow the traffic to pass.Igniting the grey matter and a bit of googling found that most of the port in the router is blocked and those allowed are 80 and some other predefined services like tftp, telnet. The port 80 is reserved by the router to access the webadmin page. So thought of changing the port of my webserver to 8080.

NB:- I was able to ping between two boxes. Hmmmm

sudo vi /etc/apache2/ports.conf