How to configure a DNS server on Ubuntu?

@maddison_wintheiser 

To configure a DNS server on Ubuntu, you can follow these steps:

1. Update the Ubuntu system:sudo apt update sudo apt upgrade
2. Install the DNS server software (Bind9) by running the following command:sudo apt install bind9
3. Configure the DNS server by editing the "/etc/bind/named.conf.options" file. You can use any text editor to do this. For example:sudo nano /etc/bind/named.conf.options
4. Add the following lines to the "named.conf.options" file to allow your DNS server to respond to queries from other computers:listen-on port 53 { any; }; allow-query { any; };
5. Create a zone file for your domain by creating a new file in the "/etc/bind" directory. For example, if your domain is "example.com", you can create a file called "/etc/bind/db.example.com" with the following contents:; ; BIND data file for example.com ; $TTL 604800 @ IN SOA ns1.example.com. admin.example.com. ( 2022040401 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Default TTL ; @ IN NS ns1.example.com. @ IN A 192.168.1.1 ns1 IN A 192.168.1.1 This file specifies the DNS records for your domain. In this example, it defines an "A" record for the domain and an "A" record for the nameserver.
6. Edit the "/etc/bind/named.conf.local" file and add the following lines to it:zone "example.com" { type master; file "/etc/bind/db.example.com"; }; This tells the DNS server to use the zone file you just created for the "example.com" domain.
7. Restart the Bind9 service:sudo systemctl restart bind9

Your DNS server should now be configured and running. You can test it by querying it from another computer using the "nslookup" command. For example:

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nslookup example.com <ip_address_of_dns_server>