📦 Installation Command
apt install dnsmasq
Dnsmasq DNS/DHCP Port & Configuration
dnsmasq systemctl: dnsmasqLightweight DNS forwarder and DHCP server. Good for small networks and development.
🔌 Default Ports
53
tcp
DNS
53
udp
DNS
67
udp
DHCP server
68
udp
DHCP client
⚙️ Configuration Files
/etc/dnsmasq.conf/etc/dnsmasq.d//etc/hosts
📂 Default Directories
- config:
/etc/dnsmasq.conf - data:
/var/lib/misc/dnsmasq.leases - logs:
/var/log/syslog - hosts:
/etc/hosts
🔐 Default Credentials
Username:N/A
Password:N/A
💡 No authentication - configuration file based
⚠️ Conflicts
✅ Works With
🛡️ Security Notes
Bind to specific interfaces, disable DHCP if not needed, use bogus-priv and domain-needed options
❓ Frequently Asked Questions
What port does Dnsmasq use?
Dnsmasq uses port 53 for DNS and optionally port 67 for DHCP.
Dnsmasq vs BIND9?
Dnsmasq is lightweight for small networks. BIND9 is full-featured for large deployments.
Where is Dnsmasq config?
Config at /etc/dnsmasq.conf or /etc/dnsmasq.d/.