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)).
Best Answer
Do you mean Firewall software like in windows,
The Linux kernel in Ubuntu provides a packet filtering system called netfilter, and the traditional interface for manipulating netfilter are the iptables suite of commands.
iptables provide a complete firewall solution that is both highly configurable and highly flexible.
You can install Uncomplicated FireWall, a frontend to Iptables .
You can further refer to Official Firewall setting up page
Note: Further discussion and references
Creating a Firewall for Your Ubuntu Desktop
Basic iptables how-to
Ubuntu Basic Security
Do i need firewall in Ubuntu.
do I need a firewall, anti-virus, anti-spyware tools?