A firewall is a network security device that monitors incoming and outgoing network traffic and permits or blocks data packets based on a set of security rules. Its purpose is to establish a barrier between your internal network and incoming traffic from external sources (such as the internet) in order to block malicious traffic like viruses and hackers.
The Importance of Using a Firewall for Threat Protection A client firewall is software that resides on the computer itself and monitors all of the network traffic on that computer. An appliance firewall is a hardware device that is connected between the Internet and your computer. These devices are often used in small network environments where several computers need to share the same Internet What Is a Port? (and Why Should I Block It?) | WatchGuard When used in construction or engineering, the term "firewall" means what it seems to mean: a wall capable of withstanding fire. It evokes something impenetrable, like a sheet of steel or a brick wall. However, in computer networking the term "firewall" means something porous. Why is firewall used? - ProProfs Discuss
Mar 26, 2008
A client firewall is software that resides on the computer itself and monitors all of the network traffic on that computer. An appliance firewall is a hardware device that is connected between the Internet and your computer. These devices are often used in small network environments where several computers need to share the same Internet What Is a Port? (and Why Should I Block It?) | WatchGuard When used in construction or engineering, the term "firewall" means what it seems to mean: a wall capable of withstanding fire. It evokes something impenetrable, like a sheet of steel or a brick wall. However, in computer networking the term "firewall" means something porous. Why is firewall used? - ProProfs Discuss
Jul 22, 2016 · While a firewall should block backdoor access via a Trojan, there’s a likelihood that this can be bypassed. You should always check the security of your internet connection in multiple ways. But firewalls cannot tackle viruses, worms, keyloggers, and other malware. This is why a firewall must be used in conjunction with an anti-virus tool.
What is a Firewall, and Why Do You Need It? Nov 22, 2018 The Importance of having Firewalls! | Geeks on Site Jul 08, 2014