|: Please read vpn.overview and see this old articles on this matter: http://wiki.openwrt.org/?do=search&id=vpn and help migrate them. Check also vpn.openvpn|
This guide is based on the use of a stable OpenWrt "Backfire" 10.03.1 OpenVPN. The aim is to show how secure Internet sharing is setup in 7 steps.
As prerequisite make sure you the router has correct date an time (use the "date" command to verify it). OpenVPN needs the router real time clock (RTC)to be accurate. The RTC accurate configuration can be achieved with ntpclient. Check the wiki on how to install and configure ntpclient.
opkg update opkg install openvpn openvpn-easy-rsa
cd /etc/easy-rsa vi vars
*OPTIONAL* (Comment out the following lines if you do not want your certificates to expire)
export CA_EXPIRE=3650 export KEY_EXPIRE=3650
(Change these last lines to suit your own country etc)
export KEY_COUNTRY="US" export KEY_PROVINCE="CA" export KEY_CITY="SanFrancisco" export KEY_ORG="Fort-Funston" export KEY_EMAIL="firstname.lastname@example.org"
- OPTIONAL: Clean out the
/etc/easy-rsa/keysdirectory and start fresh.
- Build certificates
- Create the server key
- Create client keys. Include a password since many clients may balk at a key without a password.
build-key clientPKCS12 Format (combines the key and ca certificate in one file)
- Copy the important files to the
/etc/openvpndirectory, so that they are duplicated
cd /etc/easy-rsa/keys cp ca.crt ca.key dh1024.pem server.crt server.key /etc/openvpn/
Note - if a dh2048.pem file was generated - remember to change 1024 to 2048 on the configuration files below.
It's a good idea to make an offline backup of all the generated files in the
/etc/easy-rsa/keys directory. Use a utility like WinSCP to transfer the files from the router to your computer. For SFTP support, install the SFTP server on the router:
opkg update opkg install openssh-sftp-server
That way a SFTP client like Filezilla can be used to transfer files to and from the router.
If you are using UCI to configure your system, use this configuration file:
config 'openvpn' 'lan' option 'enable' '1' option 'port' '1194' option 'proto' 'udp' option 'dev' 'tun' option 'ca' '/etc/easy-rsa/keys/ca.crt' option 'cert' '/etc/easy-rsa/keys/server.crt' option 'key' '/etc/easy-rsa/keys/server.key' option 'dh' '/etc/easy-rsa/keys/dh1024.pem' option 'ifconfig_pool_persist' '/tmp/ipp.txt' option 'keepalive' '10 120' option 'comp_lzo' 'no' option 'persist_key' '1' option 'persist_tun' '1' option 'status' '/var/log/openvpn-status.log' option 'verb' '3' option 'server' '10.0.0.0 255.255.255.0' list 'push' 'redirect-gateway def1' list 'push' 'dhcp-option DOMAIN lan' list 'push' 'dhcp-option DNS 192.168.1.1'
This will create a VPN on the 10.0.0.x IP range. If you'd like to choose a different IP range, edit it accordingly. Also change the 192.168.1.1 DNS entry to the IP address of your router if different.
If you are not using UCI configuration, use this configuration file:
mode server tls-server ### network options port 1194 proto udp dev tun ### Certificate and key files ca /etc/easy-rsa/keys/ca.crt cert /etc/easy-rsa/keys/server.crt key /etc/easy-rsa/keys/server.key dh /etc/easy-rsa/keys/dh1024.pem server 10.0.0.0 255.255.255.0 push "redirect-gateway def1" push "dhcp-option DNS 192.168.1.1" # Change this to your router's LAN IP Address client-to-client ### (optional) compression (Can be slow) #comp-lzo persist-key persist-tun verb 3 keepalive 10 120 log-append /var/log/openvpn/openvpn.log
- Start openvpn:
/etc/init.d/openvpn start- Enable openvpn to let it be automatically loaded by
Windows # Create a folder called example VirtualNet in C:/Program Files
dh1024.pem located in
/etc/easy-rsa/keys/ on the router, and place them in the VirtualNet dir
# Open up a text editor and add the following lines…
# Save the file as
client.ovpn in VirtualNet
sudo apt-get install openvpn
pacman -S openvpn
http://openvpn.se/download.html *Choose Installation Package*
- It seems like Windows Vista 64 does not like the tun/tap driver from the client package;
So we need to download the entire OpenVPN pack including Server & Client from http://openvpn.net/index.php/open-source/downloads.html \\Choose Windows Installer
- Install and run the OpenVPN for Android by Arne Schwabe (http://goo.gl/1Gu0sm).
- Copy the
client.p12file to your SD card or internal memory.
- Create a new profile. Under "Basic" settings, supply your router's WAN IP address or server address and disable "LZO Compression." Choose "PKCS12 File" under "Type" and select
client.p12file. Enter your key's password under "PKCS12 Password" to have it automatically log in.
Note: You may need to install tun.ko using the TUN.ko Installer (http://goo.gl/mFX8v). tun.ko may also be compiled into your kernel in which case the tun.ko module is not necessary on your Android device.
cd /home/your-user/VirtualNet/ sudo openvpn client.ovpn
- browse to the VirtualNet dir
- Right click on
client.ovpnand choose run with OpenVPN GUI
inbox/vpn.howto.txt · Last modified: 2014/02/21 21:40 by orenr