The system must ignore ICMP redirect messages.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-216137 | SRG-OS-000480 | SOL-11.1-050070 | SV-216137r959010_rule | 2024-11-25 | 3 |
| Description |
|---|
| Ignoring ICMP redirect messages reduces the likelihood of denial of service attacks. |
| ℹ️ Check |
|---|
| Determine if ICMP redirect messages are ignored. # ipadm show-prop -p _ignore_redirect -co current ipv4 # ipadm show-prop -p _ignore_redirect -co current ipv6 If the output of all commands is not "1", this is a finding. |
| ✔️ Fix |
|---|
| The Network Management profile is required. Disable ignore redirects for IPv4 and IPv6. # pfexec ipadm set-prop -p _ignore_redirect=1 ipv4 # pfexec ipadm set-prop -p _ignore_redirect=1 ipv6 |