dnsmasq Howto (1)

Installation

Update the system:

dnf updateinfo
dnf -y upgrade

Install the required packages:

dnf -y install 'dnsmasq'

Configuration

Edit the configuration files:

• /etc/dnsmasq.conf
• /etc/hosts

Delete the configuration directory:

rm --recursive '/etc/dnsmasq.d'

Validate the configuration:

dnsmasq --test

Start the service & get its status:

systemctl start 'dnsmasq.service'
systemctl status 'dnsmasq.service'

Observe its logs:

journalctl --unit='dnsmasq.service' --since 'today' --follow

Observe its open ports:

lsof -a -c 'dnsmasq' -i -n -P

Enable the service & check it:

systemctl enable 'dnsmasq.service'
systemctl list-unit-files | grep 'dnsmasq.service'

Open the firewall ports:

firewall-cmd --add-service='dns' --add-service='dhcp' --permanent
firewall-cmd --reload
firewall-cmd --list-all | grep 'services'

Test

Observe its open ports:

lsof -a -c 'dnsmasq' -i -n -P

Output:

COMMAND PID    USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
dnsmasq 675 dnsmasq    4u  IPv4  25887      0t0  UDP *:67
dnsmasq 675 dnsmasq    6u  IPv4  25890      0t0  UDP *:53
dnsmasq 675 dnsmasq    7u  IPv4  25891      0t0  TCP *:53 (LISTEN)
dnsmasq 675 dnsmasq    8u  IPv6  25904      0t0  UDP *:53
dnsmasq 675 dnsmasq    9u  IPv6  25905      0t0  TCP *:53 (LISTEN)

Resolve the web server's hostname:

dig 'ntp.raysoft.loc'