What is the use of a firewall and how it can be implemented?

Cyber Security
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#1

A firewall is a security system used to control and monitor network traffic. It is used for protecting the system/network from malware, viruses, worms, etc., and secures unauthorized access from a private network.

The steps required to set up and configure the firewall are listed below:

  • Change the default password for a firewall device.
  • Disable the remote administration feature.
  • Configure port forwarding for specific applications to function correctly, such as an FTP server or a web server.
  • Firewall installation on a network with an existing DHCP server can cause errors unless its firewall’s DHCP is disabled.
  • Make sure the firewall is configured to robust security policies.

A firewall is a security device in the form of computer hardware or software. It can help protect your network by acting as an intermediary between your internal network and outside traffic. It monitors attempts to gain access to your operating system and blocks unwanted incoming traffic and unrecognized sources.
A firewall is a security device — computer hardware or software — that can help protect your network by filtering traffic and blocking outsiders from gaining unauthorized access to the private data on your computer.

Not only does a firewall block unwanted traffic, it can also help block malicious software from infecting your computer.

Firewalls can provide different levels of protection. The key is determining how much protection you need.

The topics below can help you learn what firewalls do and determine the level of protection that will help keep your computer and the data on it safe and secure.

A firewall acts as a gatekeeper. It monitors attempts to gain access to your operating system and blocks unwanted traffic or unrecognized sources.

How does it do this?
A firewall acts as a barrier or filter between your computer and another network such as the internet. You could think of a firewall as a traffic controller. It helps to protect your network and information by managing your network traffic. This includes blocking unsolicited incoming network traffic and validating access by assessing network traffic for anything malicious like hackers and malware.

Your operating system and your security software usually come with a pre-installed firewall. It’s a good idea to make sure those features are turned on. Also, check your security settings to be sure they are configured to run updates automatically.