Dnsmasq provides network infrastructure for small networks: DNS, DHCP, router advertisement and network boot.
It is designed to be lightweight and have a small footprint, suitable for resource constrained routers and firewalls.
The DNS subsystem provides a local DNS server for the network, with forwarding of all query types to upstream recursive DNS servers and caching of common record types (A, AAAA, CNAME and PTR, also DNSKEY and DS when DNSSEC is enabled).
This is free and open source software.
- Local DNS names can be defined by reading /etc/hosts, by importing names from the DHCP subsystem, or by configuration of a wide range of useful record types.
- Upstream servers can be configured in a variety of convenient ways, including dynamic configuration as these change on moving upstream network.
- Authoritative DNS mode allows local DNS names may be exported to zone in the global DNS. Dnsmasq acts as authoritative server for this zone, and also provides zone transfer to secondaries for the zone, if required.
- DNSSEC validation may be performed on DNS replies from upstream nameservers, providing security against spoofing and cache poisoning.
- Specified sub-domains can be directed to their own upstream DNS servers, making VPN configuration easy.
- Internationalised domain names are supported.
Developer: Simon Kelley
License: GNU General Public License v2.0 or 3.0
Dnsmasq is written in C. Learn C with our recommended free books and free tutorials.
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