Use Bind9 as your DNS forwarder

Use Bind9 as your DNS forwarder
Hi everyone,
In this video I'll install BIND9 on Ubuntu Server and configure as my local DNS forwarder.
This solution increases efficiency because we save internet bandwidth by storing locally DNS resolutions in BIND9 local cache.
I'll have to disable systemd-resolved to switch to this new solution and demonstrate local resolutions on Ubuntu Server and MACOS as my client, using Virtualbox Host-only network connection.
Here are my commands:
1 - Install BIND9 package
apt install bind9
2 - Enter BIND9 config folder
cd /etc/bind/
3 - Edit options file to add forwarders 1.1.1.1 and 8.8.8.8
nano named.conf.options
4 - Restart BIND9 after configuring it
systemctl restart bind9
5 - First test
dig @127.0.0.1 linux.org
6 - Change local DNS server
Temporary Solution for Demonstration - runtime:
nano /run/systemd/resolve/stub-resolv.conf
Permanent Solution:
mv /etc/resolv.conf /etc/resolv.conf.systemd
nano /etc/resolv.conf
insert line:
nameserver 127.0.0.1
7 - Stop systemd-resolved
systemctl stop systemd-resolved
8 - Disable systemd-resolved from boot start
systemctl disable systemd-resolved
9 - Add ufw firewall rule for DNS protocol
ufw allow 53/udp
10 - Monitor dns traffic for testing purposes
tcpdump -vv -n -i enp0sN port53
NOTE: N is yout ehternet interface number
11 - Final test - DNS query
dig linux.org
I hope you enjoy this video. Please comment below for any questions or sugestions.
Thanks!
Regards,
LinuxTechSchool

[@linuxtechschool4841]

Hi, For the video I edited the runtime file. All systemd auto-generated files state the "don't edit this file" message. Forgot to mention the final method to replace the symlink with a permanent /etc/resolv.conf (just mentioned its historic role on DNS). Here are the commands to do so. Temporary Solution for Demonstration(runtime): nano /run/systemd/resolve/stub-resolv.conf Permanent Solution: mv /etc/resolv.conf /etc/resolv.conf.systemd echo "nameserver 127.0.0.1" > /etc/resolv.conf This way it will survive reboots. Regards!

[@Weirlive]

such a great video, thanks!!!

[@assakurayoh]

Preeeetty coool

[@johannes5523]

Hi, great video. By the way, the music in the background sound nice. Please give me a hint :)

[@linuxtechschool4841]

Hi, is it from garage band library. 😉

[@silva.christian]

hi dear, exist any tools monitoring this system? for example in Unbound exist "unbound-control stats". in the Bind9 have anyway? thank so much

[@ghaithraheem9334]

how I upgrade bind from 9.16.1 to 9.16.38 in real environment?

[@bryantonojeta5064]

Not really informative on setting up dns .. mine isn't working.

[@takasunmc]

thank you, thank you, thank you. I waste hours and hours trying to find out why my virtualhost not showing my site and zone that i create. When I applay this settings it work from first try.

[@linuxtechschool4841]

Glad it helped!

[@hayzeproductions7093]

Curious, 1:40 Can you use domains instead of IP's for forwarders? This would save me a ton of headaches.

[@JivanPal]

No, because that's a catch-22 / cyclical dilemma. That is, in order to resolve domain names to IP addresses, you need to know a DNS server. But you're suggesting that the DNS server you want to use should be determined by a domain name, so how will you resolve that name to an IP address in the first place?

[@cyberdolphin7349]

Your stupid bind9 tutorial killed my Magento installation 🤬

[@dvbteam1100]

so so speed bro not sweetable for beginners to watch this .!!!!

[@linuxtechschool4841]

Sorry for that!! Leave any questions here please! Thanks.