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In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.A firewall typically establishes a barrier between a trusted internal network and untrusted external network, such as the Internet.
In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.[1] A firewall typically establishes a barrier between a trusted internal network and untrusted external network, such as the Internet.[2]
Firewalls are often categorized as either network firewalls or host-based firewalls. Network firewalls filter traffic between two or more networks and run on network hardware. Host-based firewalls run on host computers and control network traffic in and out of those machines.
source: Wikipedia
network Security
A firewall is simply a program or hardware device that filters the information coming through the Internet connection into your private network or computer system. If an incoming packet of information is flagged by the filters, it is not allowed through.
Firewall is a used to avoid unathorised access to or from your system. It helps prevent malware and malicious attacks from entering a computer or a network of computers through the Internet
There are two types of firewall
Hardware
Software
A firewall is a network device that blocks specific forms of network traffic, setting a bulwark between trusted and untrusted networks. This provides a defense against most computer attacks, however, embarking upon a search for the perfect firewall can be convoluted and confusing.
Simply to get understand I can defined a firewall is a software which used to maintain the security to a private network and controls all their incoming and outgoing traffic based on a pre-defined set of security rules.
A firewall is software used to maintain the security of a private network and acts as a defense for a local computer against viruses, worms, Trojans and brute-force hacking attacks.
Firewall can monitor incoming traffic and block common security threats from reaching your website. This can help prevent brute force attacks and even DDoS attacks from compromising your online business/blog. If you are looking for a firewall and security plugin for WordPress site, Wordfence security plugin is one of the best WordPress firewall plugins.
A firewall program is a system protection device they safe your computer from viruses, malware and spyware.
Thanks to share your experience
A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules.
A firewall is software used to maintain the security of a private network. Firewalls block unauthorized access to or from private networks and are often employed to prevent unauthorized Web users or illicit software from gaining access to private networks connected to the Internet.
Firewall originally is referred to as a wall, constructed to halt the spread of a fire. It is also known as a network device that blocks certain kind of network traffic building a barrier between a trusted and an untrusted network. It is equivalent to a physical firewall with respect to firewall security attempts to block the spread of computer attacks.
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