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131 lines
9.0 KiB
Markdown
131 lines
9.0 KiB
Markdown
# IPsec/L2TP VPN Server Auto Setup Scripts <a href="https://travis-ci.org/hwdsl2/setup-ipsec-vpn"><img align="right" src="https://travis-ci.org/hwdsl2/setup-ipsec-vpn.svg?branch=master" alt="Build status" /></a>
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*Read this in other languages: [English](README.md), [简体中文](README-zh.md).*
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Scripts for automatic configuration of an IPsec/L2TP VPN server on Ubuntu 16.04/14.04/12.04, Debian 8 and CentOS 6 & 7. All you need to do is providing your own values for `IPSEC_PSK`, `VPN_USER` and `VPN_PASSWORD`, and let them handle the rest.
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We will use <a href="https://libreswan.org/" target="_blank">Libreswan</a> as the IPsec server, and <a href="https://www.xelerance.com/services/software/xl2tpd/" target="_blank">xl2tpd</a> as the L2TP provider.
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#### <a href="https://blog.ls20.com/ipsec-l2tp-vpn-auto-setup-for-ubuntu-12-04-on-amazon-ec2/" target="_blank">Link to VPN tutorial with detailed usage instructions</a>
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## Table of Contents
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- [Author](#author)
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- [Main Features](#main-features)
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- [Requirements](#requirements)
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- [Installation](#installation)
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- [For Ubuntu and Debian](#for-ubuntu-and-debian)
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- [For CentOS and RHEL](#for-centos-and-rhel)
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- [Next Steps](#next-steps)
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- [Important Notes](#important-notes)
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- [Upgrading Libreswan](#upgrading-libreswan)
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- [Bugs & Questions](#bugs--questions)
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- [Copyright and License](#copyright-and-license)
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## Author
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##### Lin Song
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- Final year U.S. PhD candidate seeking opportunities in the industry.
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- View my LinkedIn profile and contact me: <a href="https://www.linkedin.com/in/linsongui" target="_blank">www.linkedin.com/in/linsongui</a>
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## Main Features
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- Fully automated IPsec/L2TP VPN server setup, no user input needed
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- Encapsulates all VPN traffic in UDP - does not need ESP protocol
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- Can be directly used as "user-data" for a new Amazon EC2 instance
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- Automatically determines public IP and private IP of server
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- Includes basic IPTables rules and `sysctl.conf` settings
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- Tested with Ubuntu 16.04/14.04/12.04, Debian 8 and CentOS 6 & 7
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## Requirements
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A newly created <a href="https://aws.amazon.com/ec2/" target="_blank">Amazon EC2</a> instance, using these AMIs: (See <a href="https://blog.ls20.com/ipsec-l2tp-vpn-auto-setup-for-ubuntu-12-04-on-amazon-ec2/#vpnsetup" target="_blank">instructions</a>)
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- <a href="https://cloud-images.ubuntu.com/locator/" target="_blank">Ubuntu 16.04 (Xenial), 14.04 (Trusty) or 12.04 (Precise)</a>
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- <a href="https://wiki.debian.org/Cloud/AmazonEC2Image" target="_blank">Debian 8 (Jessie) EC2 Images</a>
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- <a href="https://aws.amazon.com/marketplace/pp/B00O7WM7QW" target="_blank">CentOS 7 (x86_64) with Updates HVM</a>
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- <a href="https://aws.amazon.com/marketplace/pp/B00NQAYLWO" target="_blank">CentOS 6 (x86_64) with Updates HVM</a>
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**-OR-**
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A dedicated server or KVM/Xen-based Virtual Private Server (VPS), with the following OS:
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(Note: Starting with a freshly installed system is recommended)
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- Ubuntu 16.04 (Xenial), 14.04 (Trusty) or 12.04 (Precise)
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- Debian 8 (Jessie)
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- Debian 7 (Wheezy) » Not recommended. Requires <a href="https://gist.github.com/hwdsl2/5a769b2c4436cdf02a90" target="_blank">this workaround</a> to work.
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- CentOS / Red Hat Enterprise Linux (RHEL) 6 or 7
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OpenVZ VPS users should instead try <a href="https://github.com/Nyr/openvpn-install" target="_blank">Nyr's OpenVPN script</a>.
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<a href="https://blog.ls20.com/ipsec-l2tp-vpn-auto-setup-for-ubuntu-12-04-on-amazon-ec2/#gettingavps" target="_blank">**» I want to run my own VPN but don't have a server for that**</a>
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:warning: **DO NOT** run these scripts on your PC or Mac! They should only be used on a server!
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## Installation
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### For Ubuntu and Debian:
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First, update your system with `apt-get update && apt-get dist-upgrade` and reboot. This is optional, but recommended.
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```bash
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wget https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/vpnsetup.sh -O vpnsetup.sh
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nano -w vpnsetup.sh
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[Edit and replace IPSEC_PSK, VPN_USER and VPN_PASSWORD with your own values]
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sudo sh vpnsetup.sh
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```
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### For CentOS and RHEL:
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First, update your system with `yum update` and reboot. This is optional, but recommended.
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```bash
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yum -y install wget nano
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wget https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/vpnsetup_centos.sh -O vpnsetup_centos.sh
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nano -w vpnsetup_centos.sh
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[Edit and replace IPSEC_PSK, VPN_USER and VPN_PASSWORD with your own values]
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sudo sh vpnsetup_centos.sh
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```
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If unable to download via `wget`, you may alternatively open <a href="vpnsetup.sh" target="_blank">vpnsetup.sh</a> (or <a href="vpnsetup_centos.sh" target="_blank">vpnsetup_centos.sh</a>) and click the **`Raw`** button. Press `Ctrl-A` to select all, `Ctrl-C` to copy, then paste into your favorite editor.
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## Next Steps
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Get your computer or device to use the VPN. Search the web for instructions, e.g. <a href="https://www.google.com/search?q=setup+l2tp+client" target="_blank">google.com/search?q=setup+l2tp+client</a>
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Enjoy your very own VPN! :sparkles::tada::rocket::sparkles:
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## Important Notes
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For **Windows users**, a <a href="https://documentation.meraki.com/MX-Z/Client_VPN/Troubleshooting_Client_VPN#Windows_Error_809" target="_blank">one-time registry change</a> is required if the VPN server and/or client is behind NAT (e.g. home router). In addition, you must enable `CHAP` (and disable `MS-CHAP v2`) <a href="https://github.com/hwdsl2/setup-ipsec-vpn/issues/7#issuecomment-210084875" target="_blank">in the "Security" tab</a> of VPN connection properties.
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**Android 6 (Marshmallow) users**: After install, edit `/etc/ipsec.conf` and append `,aes256-sha2_256` to both `ike=` and `phase2alg=`. Then <a href="https://libreswan.org/wiki/FAQ#Android_6.0_connection_comes_up_but_no_packet_flow" target="_blank">add a new line</a> `sha2-truncbug=yes`. Indent lines with two spaces. Finally, run `service ipsec restart`.
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**iPhone/iPad users**: In iOS settings, choose `L2TP` (instead of `IPSec`) as the VPN type. In case you are unable to connect, edit `ipsec.conf` and replace `rightprotoport=17/%any` with `rightprotoport=17/0`. Then restart `ipsec` service.
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If you wish to create multiple VPN users with different credentials, just <a href="https://gist.github.com/hwdsl2/123b886f29f4c689f531" target="_blank">edit a few lines</a> in the scripts.
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Clients are configured to use <a href="https://developers.google.com/speed/public-dns/" target="_blank">Google Public DNS</a> when the VPN is active. To change, set `ms-dns` in `options.xl2tpd`.
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For Amazon EC2 instances only: In the <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html" target="_blank">security group</a>, open UDP ports 500 & 4500 and TCP port 22 (optional, for SSH).
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If you configured a custom SSH port (not 22) or wish to allow other services, edit <a href="vpnsetup.sh#L277" target="_blank">IPTables rules</a> before using the scripts.
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The scripts will backup your existing config files before making changes, to the same folder with `.old-date-time` suffix.
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## Upgrading Libreswan
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The additional scripts <a href="vpnupgrade_Libreswan.sh" target="_blank">vpnupgrade_Libreswan.sh</a> and <a href="vpnupgrade_Libreswan_centos.sh" target="_blank">vpnupgrade_Libreswan_centos.sh</a> can be used to periodically upgrade Libreswan to the latest version. Check the <a href="https://libreswan.org" target="_blank">official website</a> and update the `SWAN_VER` variable as necessary.
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## Bugs & Questions
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- Have a question? Please first search other people's comments <a href="https://gist.github.com/hwdsl2/9030462#comments" target="_blank">in this GitHub Gist</a> and <a href="https://blog.ls20.com/ipsec-l2tp-vpn-auto-setup-for-ubuntu-12-04-on-amazon-ec2/#disqus_thread" target="_blank">on my blog</a>.
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- Ask Libreswan (IPsec) related questions <a href="https://lists.libreswan.org/mailman/listinfo/swan" target="_blank">on the mailing list</a>, or read these wikis: <a href="https://libreswan.org/wiki/Main_Page" target="_blank">[1]</a> <a href="https://wiki.gentoo.org/wiki/IPsec_L2TP_VPN_server" target="_blank">[2]</a> <a href="https://wiki.archlinux.org/index.php/L2TP/IPsec_VPN_client_setup" target="_blank">[3]</a> <a href="https://help.ubuntu.com/community/L2TPServer" target="_blank">[4]</a> <a href="https://wiki.strongswan.org/projects/strongswan/wiki/UserDocumentation" target="_blank">[5]</a>.
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- If you found a reproducible bug, open a <a href="https://github.com/hwdsl2/setup-ipsec-vpn/issues" target="_blank">GitHub Issue</a> to submit a bug report.
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## Copyright and License
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Copyright (C) 2014-2016 Lin Song <a href="https://www.linkedin.com/in/linsongui" target="_blank"><img src="https://static.licdn.com/scds/common/u/img/webpromo/btn_viewmy_160x25.png" width="160" height="25" border="0" alt="View my profile on LinkedIn"></a>
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Based on <a href="https://github.com/sarfata/voodooprivacy" target="_blank">the work of Thomas Sarlandie</a> (Copyright 2012)
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This work is licensed under the <a href="http://creativecommons.org/licenses/by-sa/3.0/" target="_blank">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>
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Attribution required: please include my name in any derivative and let me know how you have improved it!
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