This post explain how you can install the Open-VPN Access Server(2 user limit).

Download the package from the openVPN page and install it.

dpkg -i openvpn-as-1.8.4-Ubuntu10.amd_64.deb

Delete the existing profile and reconfigure the OpenVPN

sudo /usr/local/openvpn_as/bin/ovpn-init
Detected an existing OpenVPN-AS configuration.
Continuing will delete this configuration and restart from scratch.
Please enter ‘DELETE’ to delete existing configuration: DELETE
Stopping openvpnas daemon…

Please enter ‘yes’ to indicate your agreement [no]: yes

Once you provide a few initial configuration settings,
OpenVPN Access Server can be configured by accessing
its Admin Web UI using your Web browser.

Will this be the primary Access Server node?
(enter ‘no’ to configure as a backup or standby node)
> Press ENTER for default [yes]: yes

Please specify the network interface and IP address to be
used by the Admin Web UI:
(1) all interfaces: 0.0.0.0
(2) eth0: 192.168.1.104
Please enter the option number from the list above (1-2).
> Press Enter for default [2]: 2

Please specify the port number for the Admin Web UI.
> Press ENTER for default [943]: Enter

Please specify the TCP port number for the OpenVPN Daemon
> Press ENTER for default [443]: Enter

Should client traffic be routed by default through the VPN?
> Press ENTER for default [yes]: Enter

Should client DNS traffic be routed by default through the VPN?
> Press ENTER for default [yes]: Enter

Use local authentication via internal DB?
> Press ENTER for default [no]: Enter

Private subnets detected: [‘192.168.0.0/16’]

Should private subnets be accessible to clients by default?
> Press ENTER for default [yes]: Enter

To initially login to the Admin Web UI, you must use a
username and password that successfully authenticates you
with the host UNIX system (you can later modify the settings
so that RADIUS or LDAP is used for authentication instead).

You can login to the Admin Web UI as “openvpn” or specify
a different user account to use for this purpose.

Do you wish to login to the Admin UI as “openvpn”?
> Press ENTER for default [yes]: Enter

Initial Configuration Complete!

You can now continue configuring OpenVPN Access Server by
directing your Web browser to this URL:

https://YOUR IP:943/admin
Login as “openvpn” with the same password used to authenticate
to this UNIX host.
During normal operation, OpenVPN AS can be accessed via these URLs:
Admin  UI: https://IP:943/admin
Client UI: https://IP:943/

See the Release Notes for this release at:
http://www.openvpn.net/access-server/rn/openvpn_as_1_8_4.html

Setup the password for the user openvpn

passwd openvpn
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully

Client Connectivity

openvpn –config client.ovpn
Fri Oct 19 23:12:55 2012 OpenVPN 2.2.1 x86_64-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [eurephia] [MH] [PF_INET6] [IPv6 payload 20110424-2 (2.2RC2)] built on Mar 30 2012
Enter Auth Username:farhan
Enter Auth Password:

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