Blue Bugle: Mobile, Desktop & Web Technologies

To understand firewalls, basic understanding of how networks function is requisite. Deep down, how do the packets of information that you send reach the intended receivers? How do the messages intended for you reach you safely? And how does it all function like clockwork? Let’s understand the basics of firewalls and see how a firewall secures the traffic in and out of a network. Consider this scenario for getting an understanding of how firewalls work. Say, you open up your browser to book a flight ticket for your upcoming vacation, and your computer is conveniently insecure without a firewall. Let’s say you come across an intriguing email that gives an offer you can’t refuse. You open the email and click a link, and bam! An unwanted piece of spyware is installed on your system. The spyware then proceeds to sit on your system tray, hidden from your eyes, tracking the keystrokes you make, reading the top-secret files you have, and looking for potentially rewarding information, such