commit d78e0ed1f98bbeae09d874c748e702da31c9a1b1 · pyrox.dev/nixpkgs

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nixos/modules/services/networking/dnscrypt-proxy.nix

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         options = {

     

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           services.dnscrypt-proxy = {

     

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             enable = mkEnableOption "dnscrypt-proxy" // { description = ''

     

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               Whether to enable the DNSCrypt client proxy. The proxy relays

     

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               DNS queries to a DNSCrypt enabled upstream resolver. The traffic

     

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               between the client and the upstream resolver is encrypted and

     

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               authenticated, mitigating the risk of MITM attacks and third-party

     

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               snooping (assuming the upstream is trustworthy).

     

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               Enabling this option 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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               The recommended configuration is to run DNSCrypt proxy as a forwarder

     

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               for a caching DNS client, as in

     

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               <programlisting>

     

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               {

     

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                 services.dnscrypt-proxy.enable = true;

     

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                 services.dnscrypt-proxy.localPort = 43;

     

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                 services.dnsmasq.enable = true;

     

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                 services.dnsmasq.servers = [ "127.0.0.1#43" ];

     

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                 services.dnsmasq.resolveLocalQueries = true; # this is the default

     

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               }

     

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               </programlisting>

     

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             ''; };

     

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             localAddress = mkOption {

     

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               default = "127.0.0.1";

     

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               type = types.str;

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       {

     

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         meta = {

     

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           maintainers = with maintainers; [ joachifm ];

     

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           doc = ./dnscrypt-proxy.xml;

     

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         };

     

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         options = {

     

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           services.dnscrypt-proxy = {

     

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             enable = mkEnableOption "DNSCrypt client proxy";

     

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             localAddress = mkOption {

     

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               default = "127.0.0.1";

     

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               type = types.str;

+76

nixos/modules/services/networking/dnscrypt-proxy.xml

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       <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

     

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           upstream resolver. The traffic between the client and the upstream

     

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           resolver is encrypted and authenticated, mitigating the risk of MITM

     

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           attacks, DNS poisoning attacks, and third-party snooping (assuming the

     

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           upstream is trustworthy).

     

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         </para>

     

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         <sect1><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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             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

     

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           relay 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><title>As a forwarder for a caching DNS client</title>

     

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         <para>

     

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           By default, DNSCrypt proxy acts as a transparent proxy for the

     

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           system stub resolver. Because the client does not cache lookups, this

     

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           setup can significantly slow down e.g., web browsing. The recommended

     

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           configuration is to run DNSCrypt proxy as a forwarder for a caching DNS

     

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           client. To achieve this, change the default proxy listening port to

     

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           a non-standard value and point the caching client to it:

     

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           <programlisting>

     

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             services.dnscrypt-proxy.localPort = 43;

     

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           </programlisting>

     

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         </para>

     

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         <sect2><title>dnsmasq</title>

     

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         <para>

     

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           <programlisting>

     

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             {

     

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             services.dnsmasq.enable = true;

     

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             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><title>unbound</title>

     

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         <para>

     

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           <programlisting>

     

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             {

     

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             networking.nameservers = [ "127.0.0.1" ];

     

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             services.unbound.enable = true;

     

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             services.unbound.forwardAddresses = [ "127.0.0.1@43" ];

     

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             services.unbound.extraConfig = ''

     

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               do-not-query-localhost: no

     

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             '';

     

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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>