Security configuration and hardening guidelines for Windows DNS Server environments.

Security Hardening

Access Control

# Configure DNS server access
Set-DnsServerRecursion -Enable $false  # For authoritative servers
Set-DnsServerResponseRateLimiting -Mode Enable

# Configure query restrictions
Add-DnsServerQueryResolutionPolicy -Name "BlockExternal" -Action IGNORE -ClientSubnet "!192.168.0.0/16"

DNSSEC Configuration

# Enable DNSSEC for zone
Enable-DnsServerSigningKeyRollover -ZoneName "contoso.com" -KeyType KeySigningKey

# Sign zone
Invoke-DnsServerZoneSigning -ZoneName "contoso.com"

Monitoring and Auditing

Event Log Configuration

# Enable DNS analytical logs
wevtutil set-log "Microsoft-Windows-DNS-Server/Analytical" /enabled:true

# Configure audit logging
auditpol /set /subcategory:"Directory Service Changes" /success:enable /failure:enable

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Pro Tip: Implement DNS response rate limiting and query restrictions to protect against DNS-based attacks.

Proper security configuration protects DNS infrastructure from common threats and unauthorized access.