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FIREWALL


                 The term ‘firewall’ originally referred to a wall intended to confine a fire        Factopedia
                 or potential fire within a building. In computer, a firewall is a software
                 or hardware-based network security system that controls incoming
                 and outgoing network traffic based on applied rule set. A firewall acts
                 like a gatekeeper and prevents unauthorised access to a computer
                 network. It inspects every data packet that arrives at the network and
                 decides, based on a set of predefined rules, whether to allow or block           Most malware
                                                                                                  programs are
                 it. A firewall  establishes a barrier between a trusted, secure internal        distributed over
                 network and another network (for example, the Internet) that is not            the Internet, often

                 assumed to be secure and trusted.
                                                                                                bundled with other
                                                                                                     software.
                         Let’s CatCh uP

                    State whether these statements are true or false.

                    1.  Encrypted data can be understood easily.         ________
                    2.   Retina is the layer of blood vessels at the back
                       of the eye.                                       ________

                    3.   Antivirus is used to eradicate viruses from the                          The first known
                       computer.                                         ________                ransomware, the
                    4.   Rootkit is a type of malware that gains                                "AIDS Trojan" was
                       administrator access to the host system.          ________                launched in 1989.







                           Let’s BaCk-uP

                                                                                                30th November is
                        Computer safety refers to the protection of computer-
                      based resources against unauthorised use or physical                    known as “Computer
                      damage.                                                                     Security Day’’.
                        Authentication is the process of verifying a user’s identity
                      before granting him or her access to a computer system.
                        Password protection, face recognition, voice recognition are
                      some important techniques for computer safety.

                        Malware is designed to damage or do unwanted actions on                 The first computer
                      a computer system.                                                       worm named Morris
                        A program that identify and remove malware are known as                worm was developed
                      antivirus software.                                                      in November 2, 1988.
                        A firewall is a software or hardware-based network security
                      system that controls incoming and outgoing network traffic
                      based on applied rule set.

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