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Today, the development of information technology makes computer usage ubiquitous. Lots of enterprises construct their own IT networks and business operation relies heavily on IT techniques. Internet connects isolated PC, and makes them communicate with each other and share resources. It greatly improves competiveness of enterprises. But in the mean time, the open nature of internet means that what follows resource sharing is resource misuse. Network security becomes a serious problem for enterprises.
As enterprises are relying more and more on IT system for its uninterrupted operation, the enterprise needs to solve the problem of how to enhance the security of the system and effectively control security risks. But, enterprises also face fierce competition and need to manage their cost and resources effectively.
Problems Existing in Enterprise Network
External Security
Security breaches are common occurrences on the internet. Enterprise users may suffer security threats coming from internet, such as worms, virus, spam etc. For enterprises, these often lead to destroyed data, crashed system, hogged network, stolen data. Work efficiency also is affected, causing big economic damage.
Internal Security
Beside attacks from internet, enterprise networks also need to deal with intranet threats. It is reported that more than 60% employees use the network for their personal purpose at working time. Improper use of network reduces working efficiency, consumes network resources, introduces virus and spy software, and may cause loss of enterprise secrets.
Security Connection within Intranets, or between Intranet and Extranet
As enterprises become larger, the network that interconnects headquarters, branch offices, remote personnel also becomes more complicated. So, how to make information available to all parties while keeping data transfer safe is a big problem. The security of network connections between offices at different locations and employees at different locations greatly affects enterprise operation.
Requirements for Network Behavior Control and Role Based Management
Network becomes an essential part of enterprise business. And it also becomes a essential part of every employees in their daily working and sometimes personal activities. Employees may at one time or another visit their favorite websites to read news, shop online, visiting SNS sites, trade stock, watch online movies etc. Some of these activities goes against the purpose of the network as a productivity enhancing business tool. How to manage the network resources and improve working efficiency, control or block non-work and resource consuming activities is what IT managers need to consider.
Network Topology of Small and Medium-sized Enterprises Network：
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