AD-SUB-04: IPv6 subnets count should be retrievable
| ID | AD-SUB-04 |
| Severity | Info |
| Suite | Active Directory (on-premises) |
| Product | Active Directory |
| Feature | Sites and subnets |
| Security area | Infrastructure hardening |
| Resource type | AdSite |
| Reads from | On-premises Active Directory |
What this checks and how to fix it
Section titled “What this checks and how to fix it”IPv6 subnet configuration is important for:
- Future-proofing: IPv6 adoption continues to grow
- Dual-stack environments: Supporting both IPv4 and IPv6 clients
- Compliance: Meeting IPv6 readiness requirements
- Modern networks: Many modern networks are IPv6-first
Understanding IPv6 subnet deployment helps assess the organization’s IPv6 readiness.
Control Type
Section titled “Control Type”Operational
Security Recommendation
Section titled “Security Recommendation”- Define IPv6 subnets for all locations where IPv6 is deployed
- Ensure IPv6 subnets mirror IPv4 site topology
- Document IPv6 addressing scheme
- Plan for IPv6-only client support
How the Test Works
Section titled “How the Test Works”This test counts subnets that use IPv6 address format (containing colons).
Related Tests
Section titled “Related Tests”Test-MtAdSubnetIpv6CatchAllCount- Identifies overly broad IPv6 subnetsTest-MtAdSubnetTotalCount- Counts total subnetsTest-MtAdSubnetSiteAssociationCount- Counts sites with subnets
Mito check. Author: soulemike. Open-source licences.
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