V-22547

CAT II (Medium)

The system must not have IP tunnels configured.

Rule ID

SV-45986r1_rule

STIG

Version

V1R12

CCIs

IP tunneling mechanisms can be used to bypass network filtering.

Check for any IP tunnels.
# ip tun list
# ip -6 tun list
If any tunnels are listed, this is a finding.

Remove the tunnels.
# ip tun del <tunnel>
Edit system startup scripts to prevent tunnel creation on startup.