mikaela.github.io/_posts/2018-10-21-dnscrypt-proxy-quick-dirty-debian.md

---
layout: post
comments: true
title: "dnscrypt-proxy v2 on Debian/Ubuntu quickly, dirtily"
category: [english]
tags: [english, dnscrypt, dns, dnscrypt-proxy]
redirect_from:
  - /dnscrypt.html
  - /dnscrypt-proxy.html
---

*DNSCrypt-proxy encrypts DNS queries that would otherwise go in plaintext
 ensuring that they won't be seen or modified by anyone in the middle. It
 works as a localhost DNS server sending queries to configured DNS
 resolvers.*

I guess I should also say why you would want dnscrypt v1 vs v2. v1 which is in most of repos uses broken resolver by default and only supports one
resolver while v2 can use multiple ones and compares them for which is the
best one.

This post is on getting v2 to Debian Stable and Ubuntu pre 18.10 which
contain v1 and I don't know a better way to do this.

FIXING THIS POST IS HEAVILY WORK IN PROGRESS!"

* * * * *

*This is very hastily written and ~~may~~ will contain errors and will
hopefully be fixed soonish*

1. `sudo apt-get install curl`

As at the time of writing Debian Stable and Ubuntu include old
dnscrypt-proxy v1 which doesn't work by default download a new version from
Debian unstable (which you aren't supposed to do, but it has worked for me
on multiple systems):

Check the version number at https://packages.debian.org/sid/amd64/dnscrypt-proxy/download and fix it below:

`curl -LO https://deb.debian.org/debian/pool/main/d/dnscrypt-proxy/dnscrypt-proxy_2.0.16-2_amd64.deb`

`sudo dpkg -i dnscrypt-proxy<TAB>`

Hopefully dnscrypt-proxy is now running, check `journalctl -u dnscrypt-proxy`, there should be a line like `Oct 21 14:08:15 sedric dnscrypt-proxy[1120]: [2018-10-21 14:08:15] [NOTICE] Wiring systemd TCP socket #0, dnscrypt-proxy.socket, 127.0.2.1:53`

Edit `/etc/NetworkManager/NetworkManager.conf`, it should say say `dns=none`
e.g.:

```
[main]
plugins=ifupdown,keyfile
dns=none
```

if it doesn't say dns=none, fix it and restart `systemctl restart NetworkManager`

Edit your /etc/resolv.conf, for example:

```
sudo su -
rm /etc/resolv.conf
nano /etc/resolv.conf && chattr +i /etc/resolv.conf
```

chattr +i will prevent modifying the file unless chattr -i is done first.

Example resolv.conf:

```
nameserver 127.0.2.1
options edns0 single-request-reopen
#search mikaela.info
```

Nameserver is the host where dnscrypt-proxy says to listen on, options are
from dnscrypt-proxy documentation and search is domains that are
automatically searched for if you don't use FQDN, e.g. `ssh machine` in
my (uncommented) config would turn into `ssh machine.mikaela.info`.

I hope I remember everything, but this is a bit hasty writing and the GPG
signature or anything isn't verified and I hope I will fix this later...

for the curious my dnscrypt-proxy config https://github.com/Mikaela/shell-things/tree/master/etc/dnscrypt-proxy