Details

Generate keepalive packets on idle incoming network connections.

Solution

Enable TCP keepalives-in service:
hostname(config)#service tcp-keepalives-in

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/508

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection.This control applies to the following type of system Cisco.

References

• 800-53|SC-10

Source

• Tenable.com/audits