Title

The system is configured for a greater keep-alive time than recommended. (Cat III impact)

Discussion

Controls how often TCP sends a keep-alive packet in attempting to verify that an idle connection is still intact.

Check Content

Fix Text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds” to “300000 or 5 minutes (recommended)” or less.

Additional Identifiers

Rule ID: SV-29610r1_rule

Vulnerability ID: V-4113

Group Title: TCP Connection Keep-Alive Time

Expert Comments

CCIs tied to check.

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