freedombonee/website/EN/app_vpn.html

305 lines
10 KiB
HTML

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title></title>
<!-- 2018-04-12 Thu 12:44 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="generator" content="Org-mode" />
<meta name="author" content="Bob Mottram" />
<meta name="description" content="How to use OpenVPN on Freedombone"
/>
<meta name="keywords" content="freedombone, openvpn" />
<style type="text/css">
<!--/*--><![CDATA[/*><!--*/
.title { text-align: center; }
.todo { font-family: monospace; color: red; }
.done { color: green; }
.tag { background-color: #eee; font-family: monospace;
padding: 2px; font-size: 80%; font-weight: normal; }
.timestamp { color: #bebebe; }
.timestamp-kwd { color: #5f9ea0; }
.right { margin-left: auto; margin-right: 0px; text-align: right; }
.left { margin-left: 0px; margin-right: auto; text-align: left; }
.center { margin-left: auto; margin-right: auto; text-align: center; }
.underline { text-decoration: underline; }
#postamble p, #preamble p { font-size: 90%; margin: .2em; }
p.verse { margin-left: 3%; }
pre {
border: 1px solid #ccc;
box-shadow: 3px 3px 3px #eee;
padding: 8pt;
font-family: monospace;
overflow: auto;
margin: 1.2em;
}
pre.src {
position: relative;
overflow: visible;
padding-top: 1.2em;
}
pre.src:before {
display: none;
position: absolute;
background-color: white;
top: -10px;
right: 10px;
padding: 3px;
border: 1px solid black;
}
pre.src:hover:before { display: inline;}
pre.src-sh:before { content: 'sh'; }
pre.src-bash:before { content: 'sh'; }
pre.src-emacs-lisp:before { content: 'Emacs Lisp'; }
pre.src-R:before { content: 'R'; }
pre.src-perl:before { content: 'Perl'; }
pre.src-java:before { content: 'Java'; }
pre.src-sql:before { content: 'SQL'; }
table { border-collapse:collapse; }
caption.t-above { caption-side: top; }
caption.t-bottom { caption-side: bottom; }
td, th { vertical-align:top; }
th.right { text-align: center; }
th.left { text-align: center; }
th.center { text-align: center; }
td.right { text-align: right; }
td.left { text-align: left; }
td.center { text-align: center; }
dt { font-weight: bold; }
.footpara:nth-child(2) { display: inline; }
.footpara { display: block; }
.footdef { margin-bottom: 1em; }
.figure { padding: 1em; }
.figure p { text-align: center; }
.inlinetask {
padding: 10px;
border: 2px solid gray;
margin: 10px;
background: #ffffcc;
}
#org-div-home-and-up
{ text-align: right; font-size: 70%; white-space: nowrap; }
textarea { overflow-x: auto; }
.linenr { font-size: smaller }
.code-highlighted { background-color: #ffff00; }
.org-info-js_info-navigation { border-style: none; }
#org-info-js_console-label
{ font-size: 10px; font-weight: bold; white-space: nowrap; }
.org-info-js_search-highlight
{ background-color: #ffff00; color: #000000; font-weight: bold; }
/*]]>*/-->
</style>
<link rel="stylesheet" type="text/css" href="freedombone.css" />
<script type="text/javascript">
/*
@licstart The following is the entire license notice for the
JavaScript code in this tag.
Copyright (C) 2012-2013 Free Software Foundation, Inc.
The JavaScript code in this tag is free software: you can
redistribute it and/or modify it under the terms of the GNU
General Public License (GNU GPL) as published by the Free Software
Foundation, either version 3 of the License, or (at your option)
any later version. The code is distributed WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
As additional permission under GNU GPL version 3 section 7, you
may distribute non-source (e.g., minimized or compacted) forms of
that code without the copy of the GNU GPL normally required by
section 4, provided you include this license notice and a URL
through which recipients can access the Corresponding Source.
@licend The above is the entire license notice
for the JavaScript code in this tag.
*/
<!--/*--><![CDATA[/*><!--*/
function CodeHighlightOn(elem, id)
{
var target = document.getElementById(id);
if(null != target) {
elem.cacheClassElem = elem.className;
elem.cacheClassTarget = target.className;
target.className = "code-highlighted";
elem.className = "code-highlighted";
}
}
function CodeHighlightOff(elem, id)
{
var target = document.getElementById(id);
if(elem.cacheClassElem)
elem.className = elem.cacheClassElem;
if(elem.cacheClassTarget)
target.className = elem.cacheClassTarget;
}
/*]]>*///-->
</script>
</head>
<body>
<div id="preamble" class="status">
<a name="top" id="top"></a>
</div>
<div id="content">
<h1 class="title"></h1>
<div class="figure">
<p><img src="images/logo.png" alt="logo.png" width="80%" height="10%" align="center" />
</p>
</div>
<div id="outline-container-sec-1" class="outline-2">
<h2 id="sec-1">OpenVPN</h2>
<div class="outline-text-2" id="text-1">
<blockquote>
<p>
"<i>The Net interprets censorship as damage and routes around it.</i>" &#x2013; John Gilmore
</p>
</blockquote>
<p>
A Virtual Private Network (VPN) allows you to move your internet traffic to a different machine in a different geographical location by creating a private cryptographically protected route to that location. The usual use cases are to get around local censorship of the internet such as when you see the message "<i>this content is not available in your area</i>" when trying to play a video. Maybe you're on holiday and your hotel or workplace internet connection is censored. Using a VPN you can connect to your home server and then use the internet normally.
</p>
<p>
Using a Tor browser is another way to get around censorship, but there might be occasions where you don't want to use a Tor browser or where Tor relays and bridges are blocked or where you want to run internet apps which aren't within a browser.
</p>
<p>
On Freedombone the VPN is wrapped within a TLS layer of encryption, making it difficult for any deep packet inspection systems to know whether you are using a VPN or not. Since there is lots of TLS traffic on the internet your connection looks like any other TLS connection to a server, and this may help to avoid being censored. It's probably not possible for your local ISP to block TLS traffic without immediately generating a lot of irate customers, and stopping any kind of commercial activity.
</p>
</div>
</div>
<div id="outline-container-sec-2" class="outline-2">
<h2 id="sec-2">Installation</h2>
<div class="outline-text-2" id="text-2">
<p>
ssh into the system with:
</p>
<div class="org-src-container">
<pre class="src src-bash">ssh myusername@mydomainname -p 2222
</pre>
</div>
<p>
Select <b>Administrator controls</b> then <b>Add/Remove apps</b> then <b>vpn</b>. Choose the port which you want the VPN to operate on and then the install will continue.
</p>
<p>
Only use ports 443 or 80 for VPN as an <i>absolute last resort</i>, since doing so will prevent other web based apps from running on your server.
</p>
</div>
</div>
<div id="outline-container-sec-3" class="outline-2">
<h2 id="sec-3">Usage</h2>
<div class="outline-text-2" id="text-3">
<p>
When the installation is complete you can download your VPN keys and configuration files onto your local machine.
</p>
<div class="org-src-container">
<pre class="src src-bash">scp -P 2222 myusername@mydomainname:/home/myusername/client.ovpn .
scp -P 2222 myusername@mydomainname:/home/myusername/stunnel* .
</pre>
</div>
<p>
You will need to ensure that the <i>openvpn</i> and <i>stunnel</i> packages are installed. On an Arch based system:
</p>
<div class="org-src-container">
<pre class="src src-bash">sudo pacman -S openvpn stunnel4
</pre>
</div>
<p>
Or on a Debian based system:
</p>
<div class="org-src-container">
<pre class="src src-bash">sudo apt-get install openvpn stunnel4
</pre>
</div>
<p>
Now you can connect to your VPN with:
</p>
<div class="org-src-container">
<pre class="src src-bash">sudo stunnel stunnel-client.conf
sudo openvpn client.ovpn
</pre>
</div>
<p>
You should see a series of messages with "<i>Initialization Sequence Completed</i>" showing at the end. Leave the terminal open and perhaps minimize it to remain connected to the VPN. To leave the VPN close the terminal window.
</p>
</div>
</div>
<div id="outline-container-sec-4" class="outline-2">
<h2 id="sec-4">Changing port number</h2>
<div class="outline-text-2" id="text-4">
<p>
Avoiding censorship can be a cat and mouse game, and so if the port you're using for VPN gets blocked then you may want to change it.
</p>
<div class="org-src-container">
<pre class="src src-bash">ssh myusername@mydomainname -p 2222
</pre>
</div>
<p>
Select <b>Administrator controls</b> then <b>App Settings</b> then <b>vpn</b>. Choose <b>Change TLS port</b> and enter a new port value. You can then either manually change the port within your VPN configuration files, or download them again as described in the <a href="#sec-3">Usage</a> section above.
</p>
</div>
</div>
<div id="outline-container-sec-5" class="outline-2">
<h2 id="sec-5">Generating new keys</h2>
<div class="outline-text-2" id="text-5">
<p>
It's possible that your VPN keys might get lost or compromised on your local machine. If that happens you can generate new ones from the <b>Administrator controls</b> by going to <b>App Settings</b> then <b>vpn</b> then choosing <b>Regenerate keys for a user</b> and downloading the new keys as described in the <a href="#sec-3">Usage</a> section above.
</p>
</div>
</div>
</div>
<div id="postamble" class="status">
<style type="text/css">
.back-to-top {
position: fixed;
bottom: 2em;
right: 0px;
text-decoration: none;
color: #000000;
background-color: rgba(235, 235, 235, 0.80);
font-size: 12px;
padding: 1em;
display: none;
}
.back-to-top:hover {
background-color: rgba(135, 135, 135, 0.50);
}
</style>
<div class="back-to-top">
<a href="#top">Back to top</a> | <a href="mailto:bob@freedombone.net">E-mail me</a>
</div>
</div>
</body>
</html>