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January 6, 2010: UPDATE: Below process confirmed working on pfSense1.2.2 Relase with OpenVPN Client 2.1.1 on Windows7 Ultimate 64Bit
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Having spend most of my day to get OpenVPN running from a Windows Vista machine to a network on a pfSense box, i feel that a guide is needed for my kind; Windows-users not familiar with OpenVPN and alike
A guide of how to connect a PC on the internet, to LAN behind a pfSense firewall using OpenVPN also known as a Road-Warrior setup
This guide is NOT detailed regarding different configurations, and may not be the best security practices - so use it at your own risk...
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First of all you need to have keys and certificates generated in order to configure the pfSense OpenVPN service;
1) Download and install the most recent software from
http://openvpn.net/download.html If you plan to connect from a PC with Windows Vista you should get version 2.1 or newer.
Use the default options
2) Start a command prompt with administrator-rights!
This is done in Vista by clicking on START and then type CMD -> CMD.EXE should appear, and you RIGHT-Click on it and select 'Run as Administrator'
3) Change directory to c:\programfiles\openvpn\easy-rsa
4) run the "init-config.bat" file
5) Edit 'vars.bat' file.
I suggest using 'Wordpad' and to be able to save the file again, you need to start Wordpad in the same manner as the command-prompt (see #2)
The following things need to be edited:
"set KEY_COUNTRY=DK"
2 Letters country ID - I use DK for Denmark
"set KEY_PROVINCE=na"
2 Letters Province ID - I use na as in 'Not Applicable'
"set KEY_CITY=Copenhagen"
Name of city
set KEY_ORG=Frewald
Name of your company
set KEY_EMAIL=youremail@address.com
Put an email-address here. Dont use you private address, since this is the common address for the Certificate Authority (or something...)
Save the file
6) Run "vars.bat"
7) Run "clean-all.bat"
Run "build-ca.bat"
Then you are prompted for some different things; Leave them at default, except "Common Name" - put something like "pfSense-CA"
9) Run "build-key-server.bat server"
Again you are prompted; leave them on default except "Common Name" - use "server"
10) Run build-dh.bat
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Now its time to generate keys and certificates for the client(s)
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11) Run "build-key.bat ovpn_client1"
Again you are prompted; leave them on default except "Common Name" - here you should put in "ovpn_client1" (or whatever you have called it)
The ovpn_client1 will be the name of the keys, certificate and the name you identify the connection on later. You can use whatever name you like, and generate as many as you want (with different names).
12) The following files should now be copied from c:\programfiles\openvpn\
easy-rsa\keys to c:\programfiles\openvpn\config
ca.crt
ovpn_client1.key
ovpn_client1.crt (if you dont see a .crt file but only a .csr file, chances are that you dont have admin priviligies. Worst case generate the keys and certificates on a NON-Vista machine)
13) Make a file in the c:\programfiles\openvpn\config
called "ovpn_client1.ovpn" and the file should contain (leave out the hashes):
####
client
dev tun
proto udp
remote 64.233.167.99 1194
ping 10
resolv-retry infinite
nobind
persist-key
persist-tun
ca ca.crt
cert ovpn_client1.crt
key ovpn_client1.key
ns-cert-type server
comp-lzo
pull
verb 3
####
Please put in your own public IP address of you pfSense-box in the 'remote' line
If you have chosen another name than 'ovpn_client1' then change it in the lines beginning with 'cert' and 'key'
If you have more than one VPN client, you make one .ovpn-file per client (with the corresponding .key and .crt name)
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Now its time to configure pfSense
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21) Log into the web-gui of pfSense
22) Select VPN/OpenVPN and ad an entry in the 'server' page
Use the following settings:
Protocol: UDP
Local port: 1194
Address pool: 192.168.200.0/24 (it should be a network that you DONT currently use)
Local Network: 192.168.1.0/24 or whatever the network is that you want the VPN client to connect to !!UPDATE: Note to add this value you need to first add the server setting and the EDIT the settings again!!
Remote Network: blank
Cryptography: BF-CBC (128 bit) - or use what you want
Authentication Method: PKI
Now you need to have access to some of the files created in c:\programfiles\openvpn\
easy-rsa\keys (mentioned in #12)
23) Copy the WHOLE content of ca.crt into the "CA certificate" window
24) Copy the WHOLE content of server.crt into the "Server Certificate" window
25) Copy the WHOLE content of server.key into the "Server Key" window
26) Copy the WHOLE content of dh1024.pem into the "DH parameters" window
27) Tick DHCP-Opt: Disable NetBIOS (I dont use it anyway)
28) Tick LZO Compression
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Now we need a few simple rules in the firewall
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31) On the WAN interface you should make a rule that;
PASS
WAN
Protocol: UDP
source: any
OS type: any
Destination: any
Destination port range from: OpenVPN
Destination port range to: OpenVPN
Tick in the LOG
Leave the rest at default.
32) and another rule on the interface called LAN (or whatever the name of the net defined in #22 'address pool' is);
PASS
Any protocol
Source: LAN (or whatever the name of the net defined in #22 'address pool' is)
Any destination
Remember to apply the new rules.
Now you should be able to connect from OpenVPN (rightlick on the icon in the try and select Connect).
But remember to start OpenVPN with ADMIN RIGHTS!A small trick; If you want a specific client to be able to access more than one subnet, you can add a 'Client Specific Configuration' in pfSense;
Find it in the "WebGui/VPN/OpenVPN/Client-Specific configuration", use the Common Name given in #11 (ovpn_client1) and in custom options add the following line
push "route 192.168.2.0 255.255.255.0"
if thats the subnet that you want to have connection to.
Hope this small guide provides some help to those of us who isn't much into *nix and OpenVPN.
There is problably a bunch of typ'O's - please write a comment when you see one that needs to be corrected...
This setup is working on my current setup:
pfSense 1.2
RC4 now running on 1.2 RELASE
OpenVPN 2.1 RC7
Please visit
http://openvpn.net/howto.htm for much more indepth info
Best regards,
Frewald
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Small update:If you later would like to add new clients, run point 2,3,6, and continue from point 11! -
dont run point 7-8-9-10!!!! Also note you need to do this on the machine that was orignally used to issue the certificates.
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