AC-17 Remote Access
Control: The organization authorizes, monitors, and controls all methods of remote access to the information system.
Supplemental Guidance: Remote access is any access to an organizational information system by a user (or an information system) communicating through an external, non-organization-controlled network (e.g., the Internet). Examples of remote access methods include dial-up, broadband, and wireless. Remote access controls are applicable to information systems other than public web servers or systems specifically designed for public access. The organization restricts access achieved through dial-up connections (e.g., limiting dial-up access based upon source of request) or protects against unauthorized connections or subversion of authorized connections (e.g., using virtual private network technology). NIST Special Publication 800-63 provides guidance on remote electronic authentication. If the federal Personal Identity Verification (PIV) credential is used as an identification token where cryptographic token-based access control is employed, the access control system conforms to the requirements of FIPS 201 and NIST Special Publications 800-73 and 800-78. NIST Special Publication 800-77 provides guidance on IPsec-based virtual private networks. Related security control: IA-2.
(1) The organization employs automated mechanisms to facilitate the monitoring and control of remote access methods.
(2) The organization uses cryptography to protect the confidentiality and integrity of remote access sessions.
(3) The organization controls all remote accesses through a limited number of managed access control points.
(4) The organization permits remote access for privileged functions only for compelling operational needs and documents the rationale for such access in the security plan for the information system.
Baseline: LOW AC-17 MOD AC-17 (1) (2) (3) (4) HIGH AC-17 (1) (2) (3) (4)
Family: Access Control
ISO 17799 mapping: 11.4.2, 11.4.3, 11.4.4
COBIT 4.1 mapping: None.
PCI-DSS v2 mapping: 8.3, 8.5.6