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56 lines
2.3 KiB
Text
56 lines
2.3 KiB
Text
A. Setup
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An init script and configuration file have been provided to run dnscrypt-proxy
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as a daemon. To configure dnscrypt-proxy, edit /etc/default/dnscrypt-proxy with
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the desired settings. By default dnscrypt-proxy will use an OpenDNS server and
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will run on localhost (127.0.0.1), port 53.
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The configuration file is setup to use a dnscrypt user by default, and to
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chroot into that user's home directory to maximize security. In order to use
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the default configuration you should create a dnscrypt user and group with the
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following commands:
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groupadd -g 293 dnscrypt
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useradd -u 293 -g 293 -c "DNSCrypt" -d /run/dnscrypt -s /bin/false dnscrypt
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If you decide to use another user you should edit the CHROOTDIR and USER
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options in /etc/default/dnscrypt-proxy (there are example settings provided for
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the user 'nobody').
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In order to send all DNS requests through dnscrypt-proxy, you will need to
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update /etc/resolv.conf to point to localhost. If using dhcpcd, the easiest way
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to set dnscrypt-proxy as the primary (but not exclusive) dns resolver is to
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create file /etc/resolv.conf.head with the following line:
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nameserver 127.0.0.1
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You may also have to add the following line to enable EDNS:
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options edns0
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To start dnscrypt-proxy automatically at system start, add the following to
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/etc/rc.d/rc.local:
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if [ -x /etc/rc.d/rc.dnscrypt-proxy ]; then
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/etc/rc.d/rc.dnscrypt-proxy start
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fi
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To properly stop dnscrypt-proxy on system shutdown, add the following to
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/etc/rc.d/rc.local_shutdown:
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if [ -x /etc/rc.d/rc.dnscrypt-proxy ]; then
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/etc/rc.d/rc.dnscrypt-proxy stop
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fi
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B. DNS Cache
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dnscrypt-proxy is just a DNS resolver and does not cache DNS queries. In order
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to minimize the number of external DNS lookups, you can also run a local
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caching DNS server. A sample configuration for dnsmasq (included with
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Slackware) is provided at /usr/doc/dnscrypt-proxy-@VERSION@/dnsmasq.conf. A
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sample configuration for bind/named that also does local DNSSEC validation (if
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supported by the upstream DNS server) is also provided at
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/usr/doc/dnscrypt-proxy-@VERSION@/named.conf. Both configurations run on port
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53, forwarding lookups to dnscrypt-proxy running on port 55. In order to use
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these configurations you will need to change the port dnscrypt-proxy runs on in
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/etc/default/dnscrypt-proxy.
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