What is Firewalls?
A firewall is a system that provides network security by
filtering incoming and outgoing network traffic
For example, you often hear people in companies say things like, "I
can't use that site because the firewall blocks it".
.
How Firewalls Work?
firewall block all virus websites. it's means firewall is a
some kind filter machine because The firewall monitors all this information
traffic to allow ‘good data’ in, but block ‘bad data’ from entering your
computer.
Types of firewalls
There are two types of firewalls.
1) Software firewall
2) Hardware firewall
Software firewall
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Software
firewall are the most popular network protection method for home users. They
usually come as stand-alone applications or as part of a complete virus guard
software . a software firewall can also protect against Trojan or Worm
applications The firewall software must
be regularly updated to keep up with the latest technological improvements and
provide effective protection against the latest network attacks
Hardware firewall
it's a
some kind of network devices such as routers and can protect every single
machine on a network and require little configuration to work effectively.
Hardware firewall use for server computers mainly Hardware firewalls sit
directly behind your router.Another benefit of hardware firewalls is that they’re
always on.There’s no need to worry about protection !! these devices are built
for 24 protection
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