Internal Network Security

Introduction With the development of technology, the Internet has become a mass media among people and companies. Through the Internet, people can communicate with others in various places. By supporting the business using the Internet, companies have many advantages. As a result, companies are striving to protect their networks from attacks and ensure the best network security. Most people believe that the threat of security attacks exists only outside the company.

This threat is enough to build my case, coupled with a flawed high severity vulnerability I discovered in the company's cyber security assessment. In today's computing environment, internal network security is now needed. Organizations must always check the internal network directly connected to the Internet. The internal network security assessment method for evaluating internal networks does not mean trying to identify and correct all vulnerabilities in the network. This failure strategy is set by multiplying the number of systems on the internal network by the rate of change of the astronomical network. Furthermore, for most organizations it can be unreasonable to protect all hosts in the internal network, so it can be determined that many departments within each company deserve special attention. For a variety of reasons, the data hosted by these departments can pose a significant risk to the well-being of the entire organization.

In the past few years, the internal network of the firewall emphasizes that protecting the network boundary will have little impact on the security of the internal network. Therefore, the placement of the firewall on the internal network segment is not that large. As many people think this is unnecessary, the administrator is not satisfied with this concept, but others are worried that it will compromise user access. There are a number of technologies that you need to transplant from the network boundaries and use the interior. This section details how to select some of these technologies and techniques and how to implement them.

Regularly check the basic internal network security and record the findings. The results of use provide a reason for an ongoing internal protection initiative. How much is your network biting? Try building a blueprint for your company's network using common enumeration techniques. Can I access departmental servers? How about the database? If a motivated hacker is sitting on one desk at your facility, how important can the data be affected? Please check whether there is enough boundary control. Please try downloading and executing common illegal applications such as file sharing network and instant messaging program. Is the usage rule file synchronized with what is actually permitted? These documents are up to date and please be in frequent contact with users. For further details on management strategies, please also refer to Chapter 18.