Limit access with firewall ufw
Here is some links on how you can reject requests using firewall ufw.
http://manpages.ubuntu.com/manpages/jaunty/en/man8/ufw.8.html
http://www.ubuntu-unleashed.com/2008/05/howto-take-use-setup-and-advantage-of.html
Here is some links on how you can reject requests using firewall ufw.
http://manpages.ubuntu.com/manpages/jaunty/en/man8/ufw.8.html
http://www.ubuntu-unleashed.com/2008/05/howto-take-use-setup-and-advantage-of.html