The system must set strict multihoming.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-216138 | SOL-11.1-050080 | SV-216138r959010_rule | CCI-000366 | medium |
| Description | ||||
| These settings control whether a packet arriving on a non-forwarding interface can be accepted for an IP address that is not explicitly configured on that interface. This rule is NA for documented systems that have interfaces that cross strict networking domains (for example, a firewall, a router, or a VPN node). | ||||
| STIG | Date | |||
| Solaris 11 X86 Security Technical Implementation Guide | 2025-05-05 | |||
Details
Check Text (C-216138r959010_chk)
Determine if strict multihoming is configured.
# ipadm show-prop -p _strict_dst_multihoming -co current ipv4
# ipadm show-prop -p _strict_dst_multihoming -co current ipv6
If the output of all commands is not "1", this is a finding.
Fix Text (F-17374r372797_fix)
The Network Management profile is required.
Disable strict multihoming for IPv4 and IPv6.
# pfexec ipadm set-prop -p _strict_dst_multihoming=1 ipv4
# pfexec ipadm set-prop -p _strict_dst_multihoming=1 ipv6