The system must not respond to broadcast ICMP echo requests.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-216372 | SRG-OS-000480 | SOL-11.1-050050 | SV-216372r959010_rule | 2026-02-19 | 3 |
Description
ICMP echo requests can be useful for reconnaissance of systems and for denial of service attacks.
ℹ️ Check
Determine if ICMP echo requests response is disabled.
# ipadm show-prop -p _respond_to_echo_broadcast -co current ip
If the output of this command is not "0", this is a finding.
✔️ Fix
The Network Management profile is required.
Disable respond to echo broadcast.
# pfexec ipadm set-prop -p _respond_to_echo_broadcast=0 ip