Internet attacks are all too common these days. The firewall will fend off malicious attacks and defend the internal IT infrastructure, which makes it an essential element of the computer network. Attacks launched by hackers as well as semi automated softwares look for vulnerabilities and if they manage to break in they will report back to the attacker. Such an attack may be followed by a more serious manual attempt to break in. The firewall will check whatever is happening on the network and whether it is compatible with the customized standards. With a firewall you can customize the internet activity at your company, even banning some websites if necessary. We rely on physical firewalls from renowned manufacturers as well as Microsoft and Linux based softwares.