What is Firewall in Networking

The range of network security is very broad. The security in computer networks is a rapidly growing area of concern. Most of the valuable information resides on the network, making network an inevitable entity for survival. Security is optimized by lack of access; connectivity is optimized by complete access. Internet enabled organizations; wireless connectivity and roaming clientage have made network peripheries relatively transparent. With the rapid application and popularization of computer networks, the increase of difficult steps of enterprises and government information digitization, existing enterprise network system structure is increasingly complex. Complex network structure gives a lot of safety concerns; the need for network security is also in rapid increase of the nature of the unprecedented.  Overview of Firewall The rapid development of Internet has brought great convenience to people’s life, but at the same time, the Internet is faced with unprecedented threat. Therefore, how to use effective feasible method to make the network risk within an acceptable range is in the attention of more and more people get. Firewalls are network devices which enforce an organization’s security policy. Firewalls protect a trusted network from an untrusted network by filtering traffic according to a specified security policy. A diverse set…

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