In this hands-on lab, we’ll verify the network DNS configuration settings and perform several DNS queries. Knowing how to locate this information, and how to perform queries using the configured DNS host (as well as other hosts), is a useful skill.
Learning Objectives
Successfully complete this lab by achieving the following learning objectives:
- Determine the Configured DNS Host
cat /etc/resolv.conf- Perform a DNS Lookup of www.linuxacademy.com Using the Configured DNS Server
host www.linuxacademy.comdig www.linuxacademy.com- Perform a DNS Lookup of www.linuxacademy.com Using Another DNS Host
dig @1.1.1.1 www.linuxacademy.comWe could also use:
host www.linuxacademy.com 1.1.1.1- Test Connectivity to www.linuxacademy.com
Try
ping:ping -c1 www.linuxacademy.comThe ping should fail. Let’s try curl as a better way of seeing if thhe server is alive:
curl -I www.linuxacademy.com
