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The system must be configured with a default gateway for IPv6 if the system uses IPv6, unless the system is a router.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22490 | GEN005570 | SV-64107r1_rule | ECSC-1 | 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 |
|---|---|
| Oracle Linux 5 Security Technical Implementation Guide | 2015-03-26 |
Details
| Check Text ( C-52523r1_chk ) |
|---|
| Check for a default route for IPv6. If the system is a VM host and acts as a router solely for the benefit of its client systems, then this rule is not applicable. # ip -6 route list | grep default If the system uses IPv6, and no results are returned, this is a finding. |
| Fix Text (F-54635r2_fix) |
|---|
| Add a default route for IPv6. Edit /etc/sysconfig/network-scripts/ifcfg-eth0 (substitute interface as appropriate). Add an IPV6_DEFAULTGW= Restart the interface. # ifdown eth0; ifup eth0 |