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Protected information system link utilizing tunneling, security controls, and endpoint address translation giving the impression of a dedicated line.
NIST SP 1800-21B under Virtual Private Network from CNSSI 4009-2015
NIST SP 800-53 Rev. 5 under virtual private network from CNSSI 4009-2015
A virtual network built on top of existing networks that can provide a secure communications mechanism for data and IP information transmitted between networks.
NIST SP 800-113 under Virtual Private Network