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Security Domains and Strategies Project

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User Domain: The first layer of security in a multi-layer security plan. It’s also the weakest in the IT Infrastructure. Certain protocols and procedures need to be followed.
• Implement and Conduct Security Awareness Training.
• Implement Acceptable Use Policy (AUP).
• Monitor employee behaviors.
• Restrict access to users to certain programs and areas.
Workstation Domain: The second layer of security in a MLS plan. This is where most users connect via Workstation computers, PDA’s, Laptops and smartphones.
• Admins create a strong password policy, by making a minimum amount of characters with capitalization and numbers
• Enable Up to date anti-virus programs.
• Implement a mandated Employee Security Awareness Training.
• Limit access to company approved devices only.
• Disable CD drives and USB ports.
LAN Domain: The third layer of security in the MLS plan. This is the collection of computers in an area to one another or to a common connection medium. To prevent the unauthorized access, recommend implementing the following:
• Physically secure the wiring closets and data centers.
• Implement encryption procedures.
• Implement strict access policies and second-level authentication.
• Implement WLAN network keys that require a password for wireless access.
• Implement LAN server and configuration standards, procedures, and guidelines.
LAN-to-WAN Domain: The fourth layer in the MLS plan. This is where the IT infrastructure is linked to a wide area network and the Internet.
• Disable ping, probing and port scanning.
• Apply strict security monitoring controls for intrusion detection and prevention.

• Update devices with security fixes and software patches immediately.
• Apply file transfer monitoring, scanning, and alarming for unknown file types from unknown sources.
• Enable virus scans on emails and any other inserted media.
WAN Domain: The

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