Authoritative TLDs—Top Level Domain Servers (ccTLDs & gTLDs)

1. Types
1. Generic (.com, .net, .etc)
2. Country (.uk, .ne, etc)
   
   
2. Best Practices
1. Hardening the Operating Environment
1. Service
1. Must 
1. Limit Access
2. Enable DNS
3. Ensure zone file integrity
   
   
2. Should
   
1. Enable Security Functions (DNSSEC - Sign your zone)
   
3. May
   
3. Establishing Implementation Guidelines
   
   1. Checklists
   2. How-Tos
   3. Configuration Processes
   4. Examples