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AIX must be configured with a default gateway for IPv4 if the system uses IPv4, unless the system is a router.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-91659 | AIX7-00-002063 | SV-101757r1_rule | Medium |
| Description |
|---|
| If a system has no default gateway defined, the system is at increased risk of man-in-the-middle, monitoring, and Denial of Service attacks. |
| STIG | Date |
|---|---|
| IBM AIX 7.x Security Technical Implementation Guide | 2020-02-24 |
Details
| Check Text ( C-90813r3_chk ) |
|---|
| Check the system for an IPv4 default route using command: # netstat -r |grep default default 10.11.20.1 UG 1 1811 en0 - - If a default route is not defined, this is a finding. |
| Fix Text (F-97857r1_fix) |
|---|
| Set a default gateway for IPv4 using: # route add 0 |