How does a firewall work ?Ī firewall maintains a set of rules which are applied to both incoming and outgoing traffic. Software firewalls is cost-effective than hardware firewalls but comparatively less effective than hardware firewall. Hardware firewalls are expensive to operate and typically found in large organizations.Ī software firewall is a program installed on computer or server and monitors traffic through port numbers and applications. Physical devices like routers, for example, already have a built-in firewall. Firewalls can be hardware or software implementations.Ī hardware firewall can be a standalone physical device or form part of another device on your network. It acts like a barrier between your internal / Private network and External / Public network ( Internet). FirewallĪ firewall is a network security tool that monitors incoming and outgoing network traffic and permits or blocks data packets based on predefined set of security rules. Whenever you visit a website or connect internet, you’re basically connecting to an untrusted computer network.įirewall is a cyber security tool to protect users from the dangers by erecting an invisible wall to stop such kind of threats. Internet opens a door of information and opportunities but it also exposes its users to dangers like hacking, malware, and online fraud.
#FirewalldefinitionPosted by Technology guide in Urdu and Hindi on Friday, 25 December 2020 What is a firewall ? What is a Firewall | Types of Firewall | Firewall definition in Urdu and Hindi
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