I have always run the program UFW as my firewall in Ubuntu, and been satisifed with its performance. When I installed Ubuntu 13.04, and enabled ufw, I was not able to access the internet, and all ports were blocked. This isn't the behaviour I was expecting. I expect to reject all unsolicited packets, but allow ones requested by my computer.

The way UFW functioned in ubuntu 10.04 I found to be satisfactory (as an example). I don't want to have to add a port 80 exception to access the internet, nor do i want port 80 open and responding to port-scans. How can I make ufw drop unsolicited packets, but accept packets requested by my computer?

I am using kernel 3.8 raring ringtail, and mate Desktop 1.6.