Seven Domains of a Typical It Infrastructure

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Seven Domains of a Typical IT Infrastructure A typical IT Infrastructure consists of seven domains. Each domain requires proper security controls and must meet the A-I-C (Accountability, Integrity and Confidentiality) triad requirements. The three domains that are affected by the “Internal Use Only” standard are the User Domain, Workstation Domain and the LAN Domain. 1. User Domain • The User Domain defines what data a person can and cannot have access to within an organizations information system. This domain enforces the Acceptable Use Policy (AUP) which defines what and user is allowed to do with an organization’s owned IT asset. It is the weakest link in an IT Infrastructure. Users must understand what motivates someone to compromise an organizations system. 2. Workstation domain • The Workstation Domain is where most users connect to the IT Infrastructure. Desktop computers, laptops, or any device that connects to a network is considered a workstation .A logon ID and password is needed for access. Requires tight security and access controls. 3. LAN Domain • Local Area Network (LAN) Domain is a collection of computers connected to one another or to a common connection medium. Connection mediums can include wires, fiber optic cables or radio waves. Includes physical network components and logical configuration of services for users. 4. LAN-to-WAN • LAN-to-WAN Domain is where the IT Infrastructure links to a Wide Area Network (WAN) and the Internet. Responsible for applying the defined security controls to prevent unauthorized network access 5. WAN • Wide Area Network (WAN) Domain connects remote locations. Manages client’s firewalls and router configurations .The goal is to allow users the most access possible by making sure the data traveling in and out is safe 6. Remote Access • Remote Access Domain connects remote users to the organizations IT

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