# Airvpn

This article is being considered for archiving.

Reason: Not specific to Arch, useless page since #Using the all in one config file is fairly trivial and it is all that is needed. Commercial service had better document the premium features on their own. (Discuss in Talk:Airvpn#)

A VPN based on OpenVPN and operated by activists and hacktivists in defence of net neutrality, privacy and against censorship.

## Configuring OpenVPN to connect as a client to an AirVPN server

### Using the all in one config file

You can use the opvn file gotten from AirVPN's config generator as a conf file. Simply download the ovpn file after going through the generator, change the filename to air.conf, and place it in /etc/openvpn/client. It is reccomended to chmod 400 this file to prevent tampering or unauthorized reading. You should then start and enable openvpn-client@air.service.

### Using seperate keys and certs

OpenVPN describes configuration from scratch for both servers and clients, including generating keys and certificates.

If you're interested in simply getting openvpn to work with credentials provided by a third-party VPN service, just install the openvpn package available in the official repositories.

Airvpn generates your config for you, if you have an account and are logged in. You can choose a server, port, and proxy settings, and download a zip file with certificates and settings. On the "OpenVPN Configuration Generator" page, select "Separate keys/certs from the .ovpn file" in advanced mode (on 01.16.2017).

You should now have an archive air.zip containing 4 files:

     air.ovpn ca.crt  user.crt  user.key

Extract them to /etc/openvpn/client:

     # bsdtar -C /etc/openvpn/client -xf ~/air.zip

Note that user.key is your secret key. Don't share it or let it be compromised!

Open air.ovpn and note the lines

    ca "ca.crt"
    user "user.crt"
    key  "user.key"

These assume that these three files are in the same directory as air.ovpn. If you move them elsewhere, set their new absolute paths in air.ovpn; else it won't be able to find them.

Set permissions on the files and delete the zip:

     # chmod 400 air.ovpn ca.crt  user.crt  user.key
     # shred --remove ~/air.zip

Point openvpn at the config file as superuser:

    # openvpn --config /etc/openvpn/client/air.ovpn

You should get a couple dozen verbose connection logs, hopefully ending in something like

    Sat Jan 21 02:16:47 2012 Initialization Sequence Completed

Background openvpn if you'd like:

     CTRL-Z
       [1]+  Stopped          sudo openvpn --config /etc/openvpn/client/air.ovpn
     bg
     sudo openvpn --config /etc/openvpn/client/air.ovpn &

I'm not sure how to start this automatically. Perhaps putting a small script in /etc/rc.conf.d/ would be appropriate. For security's sake I don't want to guess at it, since some VPN users can't risk leaking untunnelled data. Presumably it should start before any torrent clients, irc, etc.

#### Sample configuration

Sample configuration profiles are included in `/usr/share/openvpn/examples/`, but here is one for reference:

    ##############################################
    ## Air VPN | https://airvpn.org | OpenVPN Client Configuration
    ##############################################

    client
    dev tun
    proto tcp
    remote 123.123.1.147 443
    resolv-retry infinite
    nobind
    persist-key
    persist-tun
    ca "ca.crt"
    cert "user.crt"
    key "user.key"
    ns-cert-type server
    cipher AES-256-CBC
    comp-lzo
    verb 3

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