The system must not respond to ICMP broadcast netmask requests.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-216134 | SOL-11.1-050040 | SV-216134r959010_rule | CCI-000366 | low |
| Description | ||||
| By determining the netmasks of various computers in your network, an attacker can better map your subnet structure and infer trust relationships. | ||||
| STIG | Date | |||
| Solaris 11 X86 Security Technical Implementation Guide | 2025-05-05 | |||
Details
Check Text (C-216134r959010_chk)
Determine if the response to address mask broadcast is disabled.
# ipadm show-prop -p _respond_to_address_mask_broadcast -co current ip
If the output of this command is not "0", this is a finding.
Fix Text (F-17370r372785_fix)
The Network Management profile is required.
Disable responses to address mask broadcast.
# pfexec ipadm set-prop -p _respond_to_address_mask_broadcast=0 ip