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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. There are various things that can be done to warrant the security of a computer system as we shall discuss shortly. User identification policy is the most important step that can be taken to guarantee the security of any networked system. 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. The top of the tier should comprise of the admins who are responsible for adding new users or modifying existing users. 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. This policy defines the nature of login credentials users can use to access the systems. Password policies are important in removing the loopholes that may exist due to user based mistakes. 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 software are available from organizations that specialize in 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. Additional information such as the consequences of failing to adhere to the policy, the login credentials validity and duration of use, can also be contained in the password policy of an organization.

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