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ITIS 3110 Lab 4

ITIS 3110 Lab 4. DNS. TA Lab Time. Times for TAs in lab posted Hadi Tue 12:30-1:30 Tue 5:00-6:00 Narjes Wed 12:30-1:30 Thu 12:30-1:30 Either class (2110 or 3110) may see either TA. Lab schedule changes. L01 2/19: Labs 04 and 05 Lab 04 due 2/26 Lab 05 due 3/11 2/26: Lab 06 L02

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ITIS 3110 Lab 4

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  1. ITIS 3110 Lab 4 DNS

  2. TA Lab Time • Times for TAs in lab posted • Hadi • Tue 12:30-1:30 • Tue 5:00-6:00 • Narjes • Wed 12:30-1:30 • Thu 12:30-1:30 • Either class (2110 or 3110) may see either TA

  3. Lab schedule changes • L01 • 2/19: Labs 04 and 05 • Lab 04 due 2/26 • Lab 05 due 3/11 • 2/26: Lab 06 • L02 • 2/18: Lab 05 • 2/25: Lab 06 • L03 • 2/21: Lab 06 • 2/28: Lab 07

  4. Project Groups Reminder to keep working on group formations Lab 6 will be 1st Team project If you do not have a group soon, I will assign groups at that lab

  5. Domain Name System • DNS is used for name resolutions • Converts domain names into IP addresses • DNS server on Linux is "bind“ • bind9 is the latest version • Purpose of the lab is to understand how DNS works by implementing your own subzone

  6. Domain Name System • Lab domain is hades.lab • Glue Record • The lab server has a glue record for your sub domain • Your subdomain must match the glue record • Check Web site if you are not sure what your subdomain IP is

  7. Domain Name System • Remember: Both IP address and subzone name must match the lab server's glue record • Make sure the subzone file is correct • The email address is separated by dots, not an @ • Increment serial number each time you change the zone file • Use the Standard notation for the serial!

  8. Troubleshooting • Use logs to find errors - CHECK SERIAL NUMBER • Use dig to test • Make sure you pay attention to the status and the ANSWER SECTION

  9. DNSSEC • Write down key file names - Pay attention to the instructions • If you make changes to the zone file, you must resign the zone for DNSSEC to work properly • Again: Check the log file to verify proper zone serial number and if DNSSEC is working

  10. Get Started

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