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Network Firewall: Definition
A network firewall shields a computer network from unauthorized access. It could take the form of a software program, a hardware device, or a combination of the two.
Network firewalls are responsible for protecting an internal computer network against malicious access from the outside, such as vulnerable open network ports or malware-infested websites. Network firewalls can be found in schools, businesses, intranets, and homes. It is also possible to configure a network firewall to limit the access of internal users to outside connections, for instance, in the case of workplace locks or parental controls.
Forms of Network Firewalls
Network administrators are provided with a wide range of approaches when choosing and configuring protection for the networks they oversee. The different types of firewalls include:
Network Firewalls vs. Computer Firewalls
It is possible for you to install a few software firewall programs directly onto the hard drive of a computer that needs it. Some antivirus programs are also available with inbuilt firewalls. In the case of a network firewall, you will be able to disable a computer-based firewall. However, these firewalls protect only the computers that run them. In contrast, network firewalls are capable of protecting the whole network and are usually installed at the network gateway.
How a Firewall Works
When your computer is equipped with firewall protection, every single thing that goes in and out of it is monitored. The firewall has the potential to monitor all this information traffic in order to allow ‘good data’ in and block ‘bad data’ from entering your system.
A firewall differs from a simple traffic analyzer, however, in that a network administrator can actually take action to control that traffic. A few firewalls can even be employed for blocking everything except users and actions that are specifically allowed by you. This granular approach allows you to block all activity on a network so that you will be able to manually set up safeguards against network-related threats.
The constant increase in cybercrime continues to become a threat to businesses all over the world. You are indeed completely aware of the fact that your organization needs firewall security and you may already have a firewall management program in place. However, it is always essential to have adequate knowledge about what exactly is firewall security and what are the benefits provided by effective firewall security software.
Originally, the word firewall literally referred to a wall, which was built to stop the spread of a fire. In the field of computer firewall protection, a firewall is actually a network device that has the potential to block specific types of network traffic, developing a barrier between an untrusted network and a trusted network. It is similar to a physical firewall referring to the fact that firewall security tries to block the spread of computer attacks.
Firewall security is important as it has the following benefits: