Do you know??

Linux actually don’t need anti-virus. The chance of virus infection on linux is low or TOTALY NONE. So it is not really necessary to install anti-virus for Ubuntu. Even you install antivirus for linux its only catches windows viruses as far as I know.

Same goes to when talking about firewall. Ubuntu really don’t need firewall either. In another words Ubuntu is more secure than Windows interms of security. Unless you are planning to set up SERVER then you should install firewall.

BUT If you still worried you can install anit-virus and firewall for Ubuntu:

Anti-Virus : ClamAV, AVG and Avast.

Firewall : Firestarter

I will add new post on how to install Firestarter on Ubuntu

Later.