Title

The VPN Gateway must limit the number of concurrent sessions for user accounts to 1 or to an organization-defined number. (Cat II impact)

Discussion

VPN gateway management includes the ability to control the number of users and user sessions that utilize a VPN gateway. Limiting the number of allowed users and sessions per user is helpful in limiting risks related to DoS attacks. This requirement addresses concurrent sessions for information system accounts and does not address concurrent sessions by single users via multiple system accounts. The maximum number of concurrent sessions should be defined based upon mission needs and the operational environment for each system. The intent of this policy is to ensure the number of concurrent sessions is deliberately set to a number based on the site's mission and not left unlimited.

Check Content

Inspect the VPN Gateway configuration. Verify the number of concurrent sessions for user accounts to 1 or to an organization-defined number (defined in the SSP). If the VPN Gateway does not limit the number of concurrent sessions for user accounts to 1 or to an organization-defined number, this is a finding.

Fix Text

Configure the VPN Gateway to limit the number of concurrent sessions for user accounts to 1 or to an organization-defined number, as documented in the SSP.

Additional Identifiers

Rule ID: SV-207189r608988_rule

Vulnerability ID: V-207189

Group Title: SRG-NET-000053

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.