114 lines
5.1 KiB
HTML
Executable File
114 lines
5.1 KiB
HTML
Executable File
<HTML>
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<HEAD>
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<TITLE> Dnsmasq - a DNS forwarder for NAT firewalls.</TITLE>
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</HEAD>
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<BODY BGCOLOR="WHITE">
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<H1 ALIGN=center>Dnsmasq</H1>
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Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP
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server. It is designed to provide DNS and, optionally, DHCP, to a
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small network. It can serve the names of local machines which are
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not in the global DNS. The DHCP server integrates with the DNS
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server and allows machines with DHCP-allocated addresses
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to appear in the DNS with names configured either in each host or
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in a central configuration file. Dnsmasq supports static and dynamic
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DHCP leases and BOOTP/TFTP/PXE for network booting of diskless machines.
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<P>
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Dnsmasq is targeted at home networks using NAT and
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connected to the internet via a modem, cable-modem or ADSL
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connection but would be a good choice for any smallish network (up to
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1000 clients is known to work) where low
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resource use and ease of configuration are important.
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<P>
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Supported platforms include Linux (with glibc and uclibc), *BSD,
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Solaris and Mac OS X.
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Dnsmasq is included in at least the following Linux distributions:
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Gentoo, Debian, Slackware, Suse, Fedora,
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Smoothwall, IP-Cop, floppyfw, Firebox, LEAF, Freesco, fli4l,
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CoyoteLinux, Endian Firewall and
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Clarkconnect. It is also available as FreeBSD, OpenBSD and NetBSD ports and is used in
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Linksys wireless routers (dd-wrt, openwrt and the stock firmware) and the m0n0wall project.
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<P>
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Dnsmasq provides the following features:
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<DIR>
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<LI>
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The DNS configuration of machines behind the firewall is simple and
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doesn't depend on the details of the ISP's dns servers
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<LI>
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Clients which try to do DNS lookups while a modem link to the
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internet is down will time out immediately.
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</LI>
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<LI>
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Dnsmasq will serve names from the /etc/hosts file on the firewall
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machine: If the names of local machines are there, then they can all
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be addressed without having to maintain /etc/hosts on each machine.
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</LI>
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<LI>
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The integrated DHCP server supports static and dynamic DHCP leases and
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multiple networks and IP ranges. It works across BOOTP relays and
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supports DHCP options including RFC3397 DNS search lists.
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Machines which are configured by DHCP have their names automatically
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included in the DNS and the names can specified by each machine or
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centrally by associating a name with a MAC address in the dnsmasq
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config file.
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</LI>
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<LI>
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Dnsmasq caches internet addresses (A records and AAAA records) and address-to-name
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mappings (PTR records), reducing the load on upstream servers and
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improving performance (especially on modem connections).
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</LI>
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<LI>
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Dnsmasq can be configured to automatically pick up the addresses of
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its upstream nameservers from ppp or dhcp configuration. It will
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automatically reload this information if it changes. This facility
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will be of particular interest to maintainers of Linux firewall
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distributions since it allows dns configuration to be made automatic.
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</LI>
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<LI>
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On IPv6-enabled boxes, dnsmasq can both talk to upstream servers via IPv6
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and offer DNS service via IPv6. On dual-stack (IPv4 and IPv6) boxes it talks
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both protocols and can even act as IPv6-to-IPv4 or IPv4-to-IPv6 forwarder.
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</LI>
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<LI>
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Dnsmasq can be configured to send queries for certain domains to
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upstream servers handling only those domains. This makes integration
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with private DNS systems easy.
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</LI>
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<LI>
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Dnsmasq supports MX and SRV records and can be configured to return MX records
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for any or all local machines.
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</LI>
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</DIR>
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<H2>Download.</H2>
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<A HREF="http://www.thekelleys.org.uk/dnsmasq/"> Download</A> dnsmasq here.
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The tarball includes this documentation, source, and manpage.
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There is also a <A HREF="CHANGELOG"> CHANGELOG</A> and a <A HREF="FAQ">FAQ</A>.
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Dnsmasq is part of the Debian distribution, it can be downloaded from
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<A HREF="http://ftp.debian.org/debian/pool/main/d/dnsmasq/"> here</A> or installed using <TT>apt</TT>.
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<H2>Links.</H2>
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Damien Raude-Morvan has an article in French at <A HREF="http://www.drazzib.com/docs-dnsmasq.html">http://www.drazzib.com/docs-dnsmasq.html</A>
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There is a good article about dnsmasq at <A
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HREF="http://www.enterprisenetworkingplanet.com/netos/article.php/3377351">http://www.enterprisenetworkingplanet.com/netos/article.php/3377351</A>
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and another at <A
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HREF="http://www.linux.com/articles/149040">http://www.linux.com/articles/149040</A>
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and Ilya Evseev has an article in Russian about dnsmasq to be found at
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<A HREF="http://ilya-evseev.narod.ru/articles/dnsmasq">
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http://ilya-evseev.narod.ru/articles/dnsmasq</A>. Ismael Ull has an
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article about dnsmasq in Spanish at <A HREF="http://www.mey-online.com.ar/blog/index.php/archives/guia-rapida-de-dnsmasq">http://www.mey-online.com.ar/blog/index.php/archives/guia-rapida-de-dnsmasq</A>
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<H2>License.</H2>
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Dnsmasq is distributed under the GPL. See the file COPYING in the distribution
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for details.
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<H2>Contact.</H2>
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There is a dnsmasq mailing list at <A
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HREF="http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss">
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http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss</A> which should be the
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first location for queries, bugreports, suggestions etc.
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Dnsmasq was written by Simon Kelley. You can contact me at <A
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HREF="mailto:simon@thekelleys.org.uk">simon@thekelleys.org.uk</A>.
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</BODY>
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