Firewall

Do you know what firewall is?

A firewall is a system or a device that the network traffic that are safe and the network traffic that is not certain to avoid permitting. In general, a firewall is made of a special machine that runs on the Gateway (Gateway) lainnya.Selain between local networks and the network is accessible to anyone with access to a private network of outside parties in control.

Firewall is divided into two types, namely:

1. Personal Firewall: Personal firewall developed a computer connected to the network against unauthorized access. Firewalls of this kind in recent times in a collection of programs that ensure that the whole computer on purpose, with some additional security features – a sort of virus protection, anti-spyware, anti-spam, and others.
2. Network Firewall: Network firewall designed to protect the network against various attacks. In general, in two forms, namely, was installed as a separate device or software on a server.

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