Review the seven domains of a typical IT infrastructure
In your Lab Report file, describe how risk can impact each of the seven domains of a
Typical _IT infrastructure: User, Workstation, Local Area Network (LAN), Local Area
Network-to-Wide Area Network (LAN-to-WAN), Wide Area Network (WAN), Remote
Access and System/Application domains.
The answer is the seven domains of an IT infrastructure are classified below, and their risk factors.
A. User Domain: Any user, worker, employee, contractor, or individual. They are considered to be the weakest link in IT security and the risk.
B. Workstation Domain: The work station, client or standalone home system. The risk is Hackers use malicious software known as malware.
C. LAN Domain: The private LAN, from SOHO’s to large corporations. To protect this domain it must be inside of a firewall if it does not have a firewall it is vulnerable and a risk.
D. LAN to WAN Domain: Wan connections between LAN locations, like which are controlled by the third party entities. Here where LAN is in a trusted zone and the WAN is in an untrusted zone, so the LAN to WAN can be protected by firewalls.
E. Remote Access Domain: It connects remote users to the organization’s infrastructure. It can be used by VPN and Dialup connections. This can provide access to a private network on a public network, this is where it is untrusted and attackers can attack and can be a major risk.
F. WAN Domain: WAN domains are networks, such as ATM’s, frame relays which are owned by a carrier network which gives access to the corporation. This is very vulnerable because they are shared with other companies and it is quite risky.
G. System/application domain: It is a collection of servers hosting applications, virtualized systems, and databases. This can be secured by giving second level authentication access to the authorized users.

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