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Tunnel entry and exit points must be in a deny-by-default security posture.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-18648 | NET-TUNL-007 | SV-20240r2_rule | ECSC-1 | Medium |
| Description |
|---|
| Having tunnels in a permit any any posture allow traffic to enter and exit the enclave without control from the Information Assurance team or SA. |
| STIG | Date |
|---|---|
| Perimeter Router Security Technical Implementation Guide Cisco | 2018-02-27 |
Details
| Check Text ( C-22367r1_chk ) |
|---|
| Follow the procedures defined in NET-TUNL-002 to determine all tunnel entry and exit points, then ensure each end-point is in a deny by default posture inbound and outbound. |
| Fix Text (F-19293r1_fix) |
|---|
| Apply a deny by default posture on every tunnel end-point. |