Learn how to install and configure a DNS server in Linux using Ubuntu 20.04 LTS and Bind9. Set up a DNS forwarder for Internet DNS resolution, as well as forward and reverse lookup zones for a local network. Follow step-by-step instructions to build a virtual machine, install Ubuntu, configure Bind9, set up forwarding and zone files, update Netplan, and test the DNS server. Gain practical knowledge on Linux DNS configuration, including creating ACLs, defining zone files, and troubleshooting common issues. Perfect for system administrators and IT professionals looking to enhance their networking skills.