Firewall is a system designed to prevent unauthorized access to a network and servers.All messages, pictures, and other personal data passes through the firewall and any suspicious files were automatically blocked. It serves as protection from any harmful and unnecessary objects inside and outside the internet.It works closely to the router program which each network packet to determine whether to forward it on its selected destination. Also, It includes proxy server which make network request on the behalf of the server and workstation users.
As of today, Firewall serves as a great savior of computer files. Because it does block unknown pop-up data and application which somehow contain harmful effect to my files and to my computer.
Big companies like Apple™ Inc. and Microsoft™ has a vast and great firewalls that ensures their computer safety. Like us, It has great help for them to develop and send personal messages without the disturbance of other people. These firewalls ensures that privacy will be achieved like the other security technology devices had. It just need proper knowledge and some training so that it could do its job nor task very well.