I installed Ubuntu with the Windows installer to use it along side. I could not find anything to activate a firewall so I thought its inbuilt and running. However now I read that I have to activate it manually? The command that was shown actually didn't prompt any response. Is it that the Windows installer version does not have that.
Also my greatest concern is that I was without firewall protection for 2-3 weeks and I am using alot of public networks (university and dorm(only cable but still)).