Install BIND9 for DNS Forwarder

How to Install BIND9 for DNS Forwarding on Linux

1. Update your system

sudo apt update && sudo apt upgrade -y

2. Install BIND9

sudo apt install bind9 -y

3. Configure BIND9 as a DNS Forwarder

Edit the main configuration file:

sudo nano /etc/bind/named.conf.options

Add or modify the following lines inside the options { } block:

options {
    directory "/var/cache/bind";
    recursion yes;
    allow-query { any; };
    forwarders {
        8.8.8.8;
        8.8.4.4;
    };
    dnssec-validation auto;
};

4. Restart BIND9

sudo systemctl restart bind9

5. Enable BIND9 to start on boot

sudo systemctl enable bind9

6. Check BIND9 status

sudo systemctl status bind9

7. Test the DNS Forwarder

dig google.com @127.0.0.1

8. (Optional) Uninstall BIND9

sudo apt remove --purge bind9 -y
sudo rm -rf /etc/bind

These are the steps to install and configure BIND9 as a DNS forwarder on Linux. Hope this helps!