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IP forwarding for IPv4 must not be enabled, unless the system is a router.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-12023 | GEN005600 | SV-38821r1_rule | ECSC-1 | Medium |
| Description |
|---|
| If the system is configured for IP forwarding and is not a designated router, it could be used to bypass network security by providing a path for communication not filtered by network devices. |
| STIG | Date |
|---|---|
| AIX 5.3 Security Technical Implementation Guide | 2012-05-25 |
Details
| Check Text ( C-37067r1_chk ) |
|---|
| #no -o ipforwarding If the value returned is not 0, this is a finding. |
| Fix Text (F-32334r1_fix) |
|---|
| Disable IPv4 forwarding on the system. #no -p -o ipforwarding=0 |