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Nov 26, 2020
Cross Domain Solutions
A cross domain solution is a system which is designed to allow two network domains (a single domain being servers with a common login) to securely exchange data. A CDS will include a content filter to prevent data from being moved which another domain does not have authorization to use.
Domains with different levels of access to secure information need a means to both manually and automatically transfer data. A CDS will offer:
1. Access solutions - the ability to view information from domains with differing security levels.
2. Transfer solutions - the ability to move information between domains with differing security levels.
3. Multi-level solutions - the storage of all data in a single domain.
The SANS Institute has prepared a diagram that shows how cross domain solutions work:
See the SANS Institute guide, Shedding Light on Cross Domain Solutions, posted here.