Basics of Computer Network Security The main target for cyber-attacks today is the networked systems. This can be attributed to the fact that attackers are more certain of gaining access to the entire system by just attacking one computer in a system. 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. There are various things that can be done to warrant the security of a computer system as we shall discuss shortly. The basic step to securing any computer network is by having a user identification policy within an organization. The policy basically lays down the procedures that users should follow in login into the systems and what times they should do so. 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 a higher tier for super users who are responsible for auditing the system. Passwords policy is another element of the access policy. The password policy should dictate the kind of passwords and usernames users are allowed to create. 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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Enforcing password policy can be done by use of third party authentication software. Today many organizations are available whose main concern is to offer authentication software to companies using network systems. Based on the needs of an organization, the right software may be sought. The right choice of this software should be one that is able to support various encryption algorithms so that users can log in without leaving a hint of their login credential to the attackers or intruders.
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The password policies should also dictate the level within which information sharing is to take place. Users should never be allowed, for instance, to share system configurations to outsiders. Additionally, information that is outside the scope of the organization should not be introduced to the network by employers by the use of portable devices such as mobile phones since that could expose your systems to malicious software. 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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