Network security is very important because it provides security to a network. Network Security prevents unauthorized access to your network. It is the job of a network administrator to adopt preventive measures to protect their networks from potential security threats.
Computer networks that are steadily involved in regular transactions, communication and flow of data packets in and out requires network security. It is not enough to just protect network devices with passwords. Nowadays Hackers can brute force login and even harvest passwords.
Types of Network Security
Unified Threat Management (UTM)
These devices serve as an all-in-one security device. Unified Threat Management appliances includes firewalls, content filtering, web caching, intrusion prevention system, application filtering, gateway anti-virus, spam anti-virus, captive portal, bandwidth management, Network Access Control, Screening of Web sites or pages, E-mail filtering, Screening of e-mail for spam and etc. They combine most of these features to provide network, data, and application security. Content of web page can be screened for pornographic content, drugs, weapons and violence or hate oriented content. Organizations can also exclude shopping, banking, YouTube video streaming and job related web page contents.