Using Dnscrypt proxy

Introduction

Dnscrypt-proxy protects DNS requests from spoofing. You can useit if you are suspecting (potential) false answers from DNS servers you are using.

Installation

opkg install dnscrypt-proxy fake-hwclock

fake-hwclock package saves system time on shutdown and restores it on the next boot. This is important for devices without real time clock (RTC). Without fake-hwclock device will fall into dead lock:

• NTP can't resolve server name without working DNS service,
• DNS service (dnscrypt-proxy) can't start because received certificates are not valid for the current (broken!) system time.

Configuration

List of available resovlers will be shown after installation, choose nearest one.

Start dnscrypt-proxy:

/opt/etc/init.d/S09dnscrypt-proxy start

It will be started after every boot automatically.

Using dnscrypt-proxy

Configure client to use DNS resolver <Your device IP>:65053.

You may use it in conjunction with dnsmasq from firmware if it's available (optionally):

echo "no-resolv" > /etc/dnsmasq.conf
echo "server=127.0.0.1#65053" >> /etc/dnsmasq.conf

Links

• dnscrypt-proxy - https://dnscrypt.org/
• SNB discussion - http://www.snbforums.com/threads/dnscrypt-from-opendns.11645