How to use Firewall :
Firewall Is of Two Types:
Hardware Firewall is Basically used in Servers as they Provide a higher Level of security When compared to Software Firewall.
The Software Firewall Are very less expensive/Almost Free . Windows and Macs comes with inbuilt Firewall .
Why to Use Firewall?
Using Internet connection leaves you Vulnerable to Attacker who can easily Steal your credentials , Data and send Malware and Viruses to your Network . Other Intruder can even Have the Power to destroy your computer.
A firewall acts as a Barrier , Shield Between Your Network and Internet .When you are accessing Internet Your device is Continuously sending A lot of Packets and Receiving too , The Packets contains Your information . Attacker might send Some packets with Malware and Virus. When Firewall is Turned on then Every Packet Passes Through Firewall which Basically Filters the Packet , And only the Packet who specifies Security criteria Is allowed to Pass through the network .
Firewalls provide security over a number of online threats such as Remote login, Trojan backdoors, Session hijacking, DOS & DDOS attacks, viruses, cookie stealing and many more.A solid firewall will help you stop intruders from accessing your system. You keep your internet link to the outside world but the outside world can’t view you unless you want them to.
Most of the Users are not aware of this Feature .
You can activate Firewall In Windows by Watching the Below Video :
You can activate Firewall In Mac by Watching the Below Video :