OpenVPN

OpenVPN is a full-featured SSL VPN solution which can accomodate a wide range of configurations, including remote access, site-to-site VPNs, WiFi security, and enterprise-scale remote access solutions with load balancing, failover, and fine-grained access-controls

Install

Install and build the LZO real-time data compression library and OpenVPN source code.

./configure
make & make install

Use

Creating configuration files for server and clients, sample-config-files directory of the OpenVPN source distribution

Editing server.conf 
Editing client.conf

Starting the server

openvpn [server config file] 

Starting the client

openvpn [client config file] 

GUI

OpenVPN Administration

Webmin OpenVPN Admin Module http://www.openit.it/index.php/openit_en/software_libero/openvpnadmin

create New key to Certification Authority

openssl dhparam -out /etc/openvpn/keys/changeme/dh2048.pem 2048

Generating DH parameters, 2048 bit long safe prime, generator 2 This is going to take a long time

/usr/bin/openssl req -batch -days 3650 -nodes -new -x509 -keyout "ca.key" -out "ca.crt" -config /etc/openvpn/openvpn-ssl.cnf

Generating a 2048 bit RSA private key, writing new private key to 'ca.key'

/usr/bin/openssl ca -gencrl -keyfile "ca.key" -cert "ca.crt" -out "crl.pem" -config /etc/openvpn/openvpn-ssl.cnf

Using configuration from /etc/openvpn/openvpn-ssl.cnf

Links

• http://openvpn.net/
• http://docs.huihoo.com/openvpn/
• http://download.huihoo.com/openvpn/