Check: GEN007820
Title
The system must not have IP tunnels configured. (Cat II impact)
Discussion
IP tunneling mechanisms can be used to bypass network filtering.
Check Content
Check for any IP tunnels. # ifconfig -a | grep 'ip.*tun' If any results are returned, this is a finding.
Fix Text
Disable the tunnels. # ifconfig <tunnel> down Remove the startup configuration for the tunnels. # rm /etc/hostname.<tunnel>
Additional Identifiers
Rule ID:
Vulnerability ID: V-22547
Group Title:
Expert Comments
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CCIs
CCIs tied to check.
| Number | Definition |
|---|---|
| CCI-001551 |
The organization defines approved authorizations for controlling the flow of information between interconnected systems. |
Controls
Controls tied to check. These are derived from the CCIs shown above.
| Number | Title |
|---|---|
| AC-4 |
Information Flow Enforcement |