Check: NET-TUNL-031
Network Infrastructure Policy STIG:
NET-TUNL-031
(in versions v10 r6 through v9 r2)
Title
Tunneling of classified traffic across an unclassified IP transport network must employ cryptographic algorithms in accordance with CNSS Policy No. 15. (Cat I impact)
Discussion
When transporting classified data over an unclassified IP network, it is imperative that traffic from the classified enclave or community of interest is encrypted prior reaching the point of presence or service delivery node of the unclassified network. Confidentiality and integrity of the classified traffic must be preserved by employing cryptographic algorithms in accordance with CNSS Policy No. 15 which requires the appropriate Suite B cryptographic algorithms listed in ANNEX B or a commensurate suite of NSA-approved cryptographic algorithms.
Check Content
Review the configuration of the IPsec VPN gateway and verify that the tunnel provisioned for transporting classified traffic across an unclassified IP transport network is using cryptographic algorithms in accordance with CNSS Policy No. 15. If cryptographic algorithms used for tunneling classified traffic across an unclassified network are not in accordance with CNSS Policy No. 15, this is a finding.
Fix Text
Configure the tunnel used for transporting classified traffic across an unclassified IP transport network to negotiate with the remote end point to employ cryptographic algorithms in accordance with CNSS Policy No. 15.
Additional Identifiers
Rule ID: SV-251351r916232_rule
Vulnerability ID: V-251351
Group Title: NET-TUNL-031
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-002396 |
The organization protects the confidentiality and integrity of the information being transmitted across each interface for each external telecommunication service. |
CCI-002418 |
The information system protects the confidentiality and/or integrity of transmitted information. |