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67 lines
2 KiB
XML
67 lines
2 KiB
XML
<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-dnscrypt-proxy">
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<title>DNSCrypt client proxy</title>
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<para>
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The DNSCrypt client proxy relays DNS queries to a DNSCrypt enabled upstream
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resolver. The traffic between the client and the upstream resolver is
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encrypted and authenticated, mitigating the risk of MITM attacks, DNS
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poisoning attacks, and third-party snooping (assuming the upstream is
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trustworthy).
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</para>
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<sect1 xml:id="sec-dnscrypt-proxy-configuration">
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<title>Basic configuration</title>
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<para>
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To enable the client proxy, set
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<programlisting>
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<xref linkend="opt-services.dnscrypt-proxy.enable"/> = true;
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</programlisting>
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</para>
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<para>
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Enabling the client proxy does not alter the system nameserver; to relay
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local queries, prepend <literal>127.0.0.1</literal> to
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<option>networking.nameservers</option>.
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</para>
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</sect1>
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<sect1 xml:id="sec-dnscrypt-proxy-forwarder">
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<title>As a forwarder for another DNS client</title>
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<para>
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To run the DNSCrypt proxy client as a forwarder for another DNS client,
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change the default proxy listening port to a non-standard value and point
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the other client to it:
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<programlisting>
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<xref linkend="opt-services.dnscrypt-proxy.localPort"/> = 43;
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</programlisting>
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</para>
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<sect2 xml:id="sec-dnscrypt-proxy-forwarder-dsnmasq">
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<title>dnsmasq</title>
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<para>
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<programlisting>
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{
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<xref linkend="opt-services.dnsmasq.enable"/> = true;
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<xref linkend="opt-services.dnsmasq.servers"/> = [ "127.0.0.1#43" ];
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}
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</programlisting>
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</para>
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</sect2>
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<sect2 xml:id="sec-dnscrypt-proxy-forwarder-unbound">
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<title>unbound</title>
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<para>
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<programlisting>
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{
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<xref linkend="opt-services.unbound.enable"/> = true;
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<xref linkend="opt-services.unbound.forwardAddresses"/> = [ "127.0.0.1@43" ];
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}
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</programlisting>
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</para>
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</sect2>
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</sect1>
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</chapter>
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