Irrespective of our profession we have all encountered the term “firewalls” in our life. We are all glued to our laptops or mobile devices and are constantly engaged in business or personal conversations all the time. These digital and electronic conversations will sooner or later bring the malicious part of the Internet into play. We come across viruses/malicious traffic/ worms/phishing scams all out to steal our personal and business information. Firewalls are a type of countermeasure to stop these elements.
Ignorance may make us think that the Internet is a safe place – but the unseen forces that rule the Internet(such as hackers and other network detection tools) always seek to gain an entry into strategic business networks and home networks. The information security industry has borrowed the concept of ‘demilitarization’ from the army to bring in the concept of ‘DMZ’ or ‘Demilitarized zone’ to secure internal networks. DMZ is a semi-secure area in the network that contains important resources.