Whats Firewall ? And Why its Important?

Firewall is a software or hardware device that protects our companies from being attacked over the internet by hackers, viruses, and worms. This may occur either at a large corporate network, or simply at a small home network; both have the same security issues.

Having a firewall in each company’s Internet connection allows the business to setup online rules for the users. For example, with the firewall the company can control the access to certain websites, giving it the control of how employees use the network. These are the different ways of how a firewall controls the online activities:

Firewall Futures;

Packet filtering: small amount of data is analyzed and distributed according to the filter’s standards. .

Proxy service: online Information is saved by the firewall and then sent to the requesting system.

Stateful inspection: matches specific details of a data packet to a database of reliable information.

Firewalls allow you to either add or remove filters based on certain circumstances such as:

IP addresses: If a certain IP address, not belonging to the company’s network is accessing too many files from the server, this IP can get blocked by the firewall.

Domain names: with the firewall, a company is able to block or allow access to certain domains.

Specific words and phrases: The firewall will scan each packet of information to match the filter content. You may select any word or sentence to be blocked.

Therefor I mostly suggested to all my friends and families even though people who asked for assistance and suggestion, having firewall nowadays is very essential.