A firewall is a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form, or a combination of both.
Firewalls are incorporated into a wide variety of networked devices to filter traffic and lower the risk that malicious packets travelling over the public internet can impact the security of a private network. Firewalls may also be purchased as stand-alone software applications.
Software firewalls:
Software firewalls are designed to protect a computer by blocking certain programs from sending and receiving information from a local network or the Internet.
Hardware firewalls
Hardware firewalls are found on most network routers and can be configured through the router setup screen.
You can learn more in detail about Firewall at TCCI Coaching Institute. Faculty of TCCI teach all subjects of EC Engineering, EEE Engineering,Electrical Engineering, and computer networking in Bopal and satellite in Ahmedabad.
Call us @ 9825618292
Visit us @ http://tccicomputercoaching.com/blog/
tccicomputercoaching 