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Homework 03

Homework 03. DNS. Architecture. b.nctucs.net 140.113.b.b 192.168.2.0/24. a.nctucs.net 140.113.a.a 192.168.1.0/24. slave. delegation. Requirement. Setup a DNS server with BIND Serve your own domain A Serve your teammate B’s domain as a slave Updates should be synchronized Delegation

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Homework 03

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  1. Homework 03 DNS

  2. Architecture b.nctucs.net 140.113.b.b 192.168.2.0/24 a.nctucs.net 140.113.a.a 192.168.1.0/24 slave delegation

  3. Requirement • Setup a DNS server with BIND • Serve your own domain A • Serve your teammate B’s domain as a slave • Updates should be synchronized • Delegation • Delegate a sub-domain to your teammate B • Reverse zone for your NAT • Each IP in 192.168.x.0/24 • SSHFP record for your server • Make a reasonable setting

  4. Requirement (Cont.) • View • Create TA.{your.domain} A record • For queries from 192.168.0.0/16, answer 192.168.0.254 • Otherwise, answer your public IP • Logging • Record all records to /var/log/named.log • Do log rotate • You might be asked to explain the meaning of each log entry • Security • Only allow AXFR request from 140.113.235.0/24

  5. Bonus – DNS Hosting Service • Use database as backend • Write a simple web page for user to input their zone data • Zone files in BIND is still valid • Hint: Dynamically Loadable Zones

  6. Hand-in • Due • 5/22 • Demo • TBA

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