Linux Labs· Linux Server ServicesLab 18 of 26

Restricted DNS Caching and Forwarding

Turn server1 into a caching resolver for the client alone: recursion and cache access for one address, every question forwarded to the lab's upstream on server2 and nowhere else. Then prove the cache with TTLs and the upstream's own query log, and prove the outsider is refused.

  • Intermediate
  • 45 min
  • Not rated yet
Start labPart of Advanced Linux System Administration
  • A real environment in your browser
  • You run the commands yourself
  • Your result is checked automatically

In this moduleLinux Server Services

  1. BIND Authoritative Forward and Reverse DNS55 min
  2. Restricted DNS Caching and ForwardingYou are here
  3. Secondary DNS and Authenticated Zone Transfer55 min
  4. Apache Name-Based Virtual Hosts50 min
  5. Nginx Reverse Proxy in Front of a Private Application50 min
  6. Apache HTTPS with a Training CA55 min
  7. Rotate the Certificate on an HTTPS Reverse Proxy55 min
  8. Samba Authenticated Team Share50 min
  9. MariaDB Administration and Least-Privilege Access55 min
  10. Postfix Local Notifications and the Mail Queue45 min