How to Configure dnsmasq on Ubuntu Server 18.04 LTS

Step 1: Install Dnsmasq on Ubuntu 20.04|18.04. Ubuntu 18.04+ comes with systemd-resolve which you need to disable since it binds to port 53 which will conflict with Dnsmasq port. ...
Step 2: Adding DNS records to Dnsmasq. Add DNS records in the file. /etc/hosts . ...
Step 3: Testing Dnsmasq DNS functionality.

How do I install and configure Dnsmasq on Ubuntu 18.04 LTS?
How configure Dnsmasq Ubuntu?
How do I start Dnsmasq server?
How use Dnsmasq Linux?
How do I know if Dnsmasq is running?
What is Systemd resolv?
Is Dnsmasq a DNS server?
What is Dnsmasq Ubuntu?
Does Dnsmasq use resolv conf?
How do I kill Dnsmasq?
Is Dnsmasq caching?
What is bogus priv?

How do I install and configure Dnsmasq on Ubuntu 18.04 LTS?

Install and Configure dnsmasq in Ubuntu 18.04

Free port 53 to use with dnsmasq. Ubuntu 18.04 uses systemd-resolve service that is bind with port 53. ...
Create a new “resolv.conf” file. ...
Install “dnsmasq” using apt repository. ...
Check version after Installation. ...
Add DNS records to dnsmasq. ...
Check dnsmaq Functionality using 'dig'

How configure Dnsmasq Ubuntu?

Create a DHCP and DNS Server with Dnsmasq on Ubuntu Server 18.04

Step 1: Update the hosts file. Once you've assigned a static IP address, edit the hostname in the /etc/hosts file so that it resolves to the static IP. ...
Step 2: Install Dnsmasq. ...
Step 3: Configure DNS. ...
Step 4: Configure DHCP.

How do I start Dnsmasq server?

For those new to Dnsmasq, Dnsmasq is a simple, lightweight, easy to use and manage DNS server with support for Lua scripting, IPv6, DNSSEC, network booting for PXE, BOOTP, and TFTP.
...

Step 1: Install Dnsmasq on Ubuntu 20.04|18.04. ...
Step 2: Adding DNS records to Dnsmasq. ...
Step 3: Testing Dnsmasq DNS functionality.

How use Dnsmasq Linux?

The dnsmasq server can be configured via the /etc/dnsmasq. conf file (which contains well commented and explained options), and user-defined configuration files can also be added in the /etc/dnsmasq. d directory. DNS is enabled by default, so before making any changes, make sure to create a backup of /etc/dnsmasq.

How do I know if Dnsmasq is running?

Dnsmasq troubleshooting

See if dnsmasq is running with ps guax | grep dnsmasq. ...
Check the dnsmasq configuration files in /etc/dnsmasq.d. ...
There should be some settings in them and they should not mentioned that a service (DNS or DHCP) is not enabled.
In the DNS file, there should be two server lines, with an IP, like this: server=208.67.222.222.

What is Systemd resolv?

systemd-resolved is a system service that provides network name resolution to local applications. It implements a caching and validating DNS/DNSSEC stub resolver, as well as an LLMNR and MulticastDNS resolver and responder. ... The native, fully-featured API systemd-resolved exposes on the bus, see org. freedesktop.

Is Dnsmasq a DNS server?

dnsmasq is free software providing Domain Name System (DNS) caching, a Dynamic Host Configuration Protocol (DHCP) server, router advertisement and network boot features, intended for small computer networks.

What is Dnsmasq Ubuntu?

dnsmasq is a very lightweight local DNS server. dnsmasq can also be configured as a DNS cache server and DHCP server. dnsmasq has IPv4 and IPv6 supports including DHCPv4 and DHCPv6. dnsmasq is ideal for small network.

Does Dnsmasq use resolv conf?

conf points to 127.0. 0.1, dnsmasq will actually just use the other resolv. conf file and leave /etc/resolv.

How do I kill Dnsmasq?

Comment out dns=dnsmasq in /etc/NetworkManager/NetworkManager. conf. Stop Dnsmasq with sudo killall -9 dnsmasq.

Is Dnsmasq caching?

Dnsmasq is a lightweight DHCP and DNS caching nameserver. Unlike BIND, dnsmasq is incredibly simple to get up and running. The benefits of adding this will be quite obvious (like your DNS queries getting dramatically faster).

What is bogus priv?

Always include these lines: domain-needed bogus-priv. These prevent packets with malformed domain names and packets with private IP addresses from leaving your network. This limits your name services exclusively to Dnsmasq, and it will not use /etc/resolv.conf or any other system name service files: no-resolv.