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Basics of Computer Network Security

Cyber attackers are now keen on attacking networked systems. This is particularly the case because attacking computers in a network can be easier as opposed to attacking standalone computers. Owing to this, therefore, care should always be taken to ensure that networked systems are secure and are not prone to threats posed by cyber attackers. A number of things can be put in place to guarantee that a computer network is secure as we shall be able to see briefly.

The basic step to securing any computer network is by having a user identification policy within an organization. The essence of the policy is to dictate the authorized times of system access and which users should be able to access the system on the set times. The policy further should define the hierarchy of network users and assign different roles on each user. The top of the hierarchy should always have the admins whose main roles are to modify existing users and adding new users to the network. There can also be room for super users who are above the administrators and who should be charged with the tasks of conducting regular system audits.

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. Since not all network users may be knowledgeable on security matters, it is crucial to help such users be aligned with the organizations expectations. Execution of the policy should be done by putting into place systems that are able to restrict access to compliant users only.
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Authentication software can be installed to enforce password policies. these systems can be purchased from security agencies whose main concern is network security. Based on the needs of an organization, the right software may be sought. 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.