An intranet is a logical (not physical) network that is specific to a single organization. It may reside wholly within the organizations boundaries, and be contained within the companys internal network, or span across public networks such as the Internet. The traffic that goes across the intranet includes proprietary data that should not be exposed to those outside the organization. Because of the security implications of sending private data across public network links, when planning an intranet that uses these public links, you should also plan to implement VPN technology to authorize users and encrypt the traffic that crosses outside your internal networks boundaries.329
329. Houser, Tcat, and OBoyle, Helen Inside Scoop to CompTIA Network+ Certification, TotalRecallPress, 2002.
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