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Basics of Computer Network Security Networked systems are a major target for cyber-attacks. This is mainly because of the fact that attackers know that once they gain access to one system, they are sure to affect the entire system. As a result of this, therefore, there is great need to ensure that computers in a network are secured from any forms of intrusions so that the companies information can remain private. As we shall see, there are a number of things that can be put in place to make sure that these systems are secure. The basic step to securing any computer network is by having a user identification policy within an organization. This policy stipulates the authorized users who can login into the network and at what times. The policy further should define the hierarchy of network users and assign different roles on each user. On the top of the hierarchy, we should have the administrators who are capable of assigning user roles to existing users as well as able to add new users to the system. There can also be a higher tier for super users who are responsible for auditing the system. The policy should also spell out the password policy. The police dictates the user login credentials that the system is going to accept for all the users in the organization. Because not all users may be informed on network security, password policy serves as a tool to sever this loophole. Once the password policy has been formulated, checks and controls can be added to the system to ensure that users adhere to the policy as has been set down.
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Third party authentication systems can be deployed to implement password policies. these systems can be purchased from security agencies whose main concern is network security. By considering the company’s needs, the most suitable software can be bought to enforce the password policy. The software should be able to cater for as many password matrixes as possible to allow the users create passwords that are unique and hard for unauthorized users to guess.
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The password policies should also dictate the level within which information sharing is to take place. Important information, for instance, about the settings of the network systems should never be divulged to people who shouldn’t be privy to it. Introduction of alien information by the employers by use of portable devices such as flash disks, floppy disks, DVDs or memory sticks should also be inhibited so that the network is protected from the introduction of malicious software which can be used by the attackers to gain access to the network. Other important details that should be in the policy should also be guidelines on password validity, expiry and consequences that can be faced in case there are violations of the policy.