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The system must ignore ICMPv4 redirect messages by default.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-38533 | RHEL-06-000091 | SV-50334r3_rule | Low |
| Description |
|---|
| This feature of the IPv4 protocol has few legitimate uses. It should be disabled unless it is absolutely required. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 6 Security Technical Implementation Guide | 2017-04-28 |
Details
| Check Text ( None ) |
|---|
| None |
| Fix Text (F-43481r1_fix) |
|---|
| To set the runtime status of the "net.ipv4.conf.default.accept_redirects" kernel parameter, run the following command: # sysctl -w net.ipv4.conf.default.accept_redirects=0 If this is not the system's default value, add the following line to "/etc/sysctl.conf": net.ipv4.conf.default.accept_redirects = 0 |