Changes are coming to https://stigviewer.com.
Take our survey to help us understand your usage and how we can better serve you in the future.
Take Survey
The administrator must ensure that the maximum hop limit is at least 32.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-30617 | NET-IPV6-059 | SV-40390r1_rule | Low |
| Description |
|---|
| The Neighbor Discovery protocol allows a hop limit value to be advertised by routers in a Router Advertisement message to be used by hosts instead of the standardized default value. If a very small value was configured and advertised to hosts on the LAN segment, communications would fail due to hop limit reaching zero before the packets sent by a host reached its destination. |
| STIG | Date |
|---|---|
| Perimeter Router Security Technical Implementation Guide Juniper | 2017-06-29 |
Details
| Check Text ( C-39254r1_chk ) |
|---|
| Review the router or multi-layer switch configuration to determine if the default maximum hop limit has been configured. If it has been configured, then it must be set to at least 32. protocols { … … router-advertisement { interface [fe-1/1/1 fe-1/1/2] { current-hop-limit 128; } … } } Note: The JUNOS default is 64. Hence, if the hop limit is not configured, the router will be in compliance with the requirement. |
| Fix Text (F-34363r2_fix) |
|---|
| Configure maximum hop limit to at least 32. |