[PCI DSS 3.0] [PCI DSS 3.0] 8.3 Incorporate two-factor authentication for remote network access originating from outside the net

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8.3 Incorporate two-factor authentication for remote network access originating from outside the network by personnel (including users and administrators) and all third parties, (including vendor access for support or maintenance).

Note: Two-factor authentication requires that two of the three authentication methods (see Requirement 8.2 for descriptions of authentication methods) be used for authentication. Using one factor twice (for example, using two separate passwords) is not considered two-factor authentication.
Examples of two-factor technologies include remote authentication and dial-in service (RADIUS) with tokens; terminal access controller access control system (TACACS) with tokens; and other technologies that facilitate two-factor authentication.


8.3.a Examine system configurations for remote access servers and systems to verify two-factor authentication is required for:

• All remote access by personnel
• All third-party/vendor remote access (including access to applications and system components for support or maintenance purposes).

8.3.b Observe a sample of personnel (for example, users and administrators) connecting remotely to the network and verify that at least two of the three authentication methods are used.

Two-factor authentication requires two forms of authentication for higher-risk accesses, such as those originating from outside the network
This requirement is intended to apply to all personnel—including general users, administrators, and vendors (for support or maintenance) with remote access to the network—where that remote access could lead to access to the cardholder data environment.
If remote access is to an entity’s network that has appropriate segmentation, such that remote users cannot access or impact the cardholder data environment, two-factor authentication for remote access to that network would not be required. However, two-factor authentication is required for any remote access to networks with access to the cardholder data environment, and is recommended for all remote access to the entity’s networks.
 
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