whats a firewall?

Answer 1

something that blocks hackers or ddos attacks

Answer 2

A firewall can be different things. It can protect you from Viruses, hackers, toolbar changes, BHO changes, Winsock changes, Start-Up objects... A firewall is almost necessary to have when using a pc. It is important to get the right firewall instead of just anyone I'll list some sources.

A firewall is an information technology (IT) security device which is configured to permit, deny or proxy data connections set and configured by the organization's security policy. Firewalls can either be hardware and/or software based.

A firewall's basic task is to control traffic between computer networks with different zones of trust. Typical examples are the Internet which is a zone with no trust and an internal network which is (and should be) a zone with high trust. The ultimate goal is to provide controlled interfaces between zones of differing trust levels through the enforcement of a security policy and connectivity model based on the least privilege principle and separation of duties.

A firewall is also called a Border Protection Device (BPD) in certain military contexts where a firewall separates networks by creating perimeter networks in a Demilitarized zone (DMZ). In a BSD context they are also known as a packet filter. A firewall's function is analogous to firewalls in building construction.

Proper configuration of firewalls demands skill from the firewall administrator. It requires considerable understanding of network protocols and of computer security. Small mistakes can render a firewall worthless as a security tool.

Answer 3

A firewall protects networked computers from intentional hostile intrusion that could compromise confidentiality or result in data corruption or denial of service. It may be a hardware device or a software program running on a secure host computer. In either case, it must have at least two network interfaces, one for the network it is intended to protect, and one for the network it is exposed to.

A firewall sits at the junction point or gateway between the two networks, usually a private network and a public network such as the Internet. The earliest firewalls were simply routers. The term firewall comes from the fact that by segmenting a network into different physical subnetworks, they limited the damage that could spread from one subnet to another just like firedoors or firewalls.

Answer 4

It is a software program which monitors and controls access between your computer and the Internet. Its purpose is to protect your computer from hackers by preventing them from being able to access your PC.

Answer 5

It is an essential part of your computer and it blocks out things that are harmful to your computer

Answer 6

if you are talking about the computer fire wall it's a block up that block your pc from others.

if you are talking about the fire wall the real fire wall it's a wall of fire or a wall on fire, best thing is never touch it you can get burn.

Answer 7

blocks some viruses and worms that your computer may be susceptible to.

Answer 8

a wall in the computer..