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 SUSE operating system must not forward Internet Protocol version 4 (IPv4) source-routed packets by default.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-217289 | SLES-12-030370 | SV-217289r603262_rule | Medium |
| Description |
|---|
| Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when IPv4 forwarding is enabled and the system is functioning as a router. |
| STIG | Date |
|---|---|
| SLES 12 Security Technical Implementation Guide | 2022-12-06 |
Details
| Check Text ( C-18517r370023_chk ) |
|---|
| Verify the SUSE operating system does not accept IPv4 source-routed packets by default. Check the value of the default accept source route variable with the following command: # sysctl net.ipv4.conf.default.accept_source_route net.ipv4.conf.default.accept_source_route = 0 If the returned line does not have a value of "0" this is a finding. |
| Fix Text (F-18515r370024_fix) |
|---|
| Configure the SUSE operating system to the required kernel parameter by adding the following line to "/etc/sysctl.conf" (or modify the line to have the required value): net.ipv4.conf.default.accept_source_route = 0 Run the following command to apply this value: # sysctl --system |