Page 201 / 237 Scroll up to view Page 196 - 200
OxyGEN
mini
Office
Administrator’s Guide
Server Mode
When OxyGEN miniOffice is configured to run in Server mode, the configuration page presented in
Figure 11.5 appears. When using a Routed type of tunnel, to configure your device, you must specify
the
Network
and
Netmask
values for the subnet used as an IP address pool for the connected clients.
Each remote client that connects to the OxyGEN SSL-VPN server will automatically acquire an IP address
from this pool. If, on the other hand, you have selected a Bridged type of tunnel, no IP addressing info
is required and you must only select which LAN Service is going to be bridged over the SSL VPN tunnel.
The DHCP server of the selected Service is also going to be used for providing IP addressing information
to any requests received over the tunnel. Once you have entered the correct values, click
Apply
in
order to activate your settings.
The final step in order to finish setting up the SSL-VPN server, is to define remote users and generate
the corresponding certificates. To this end click the
Manage
key under the
Users
heading. The screen
presented in Figure 11.6 appears. The table at the top of the page, displays a list of the configured users.
You can Revoke configured users by clicking on the corresponding
icon of
Action
column.
In order to add a new remote user, enter the username under the
Add New User
heading and click
the
Save
key. The new user is added and a message window opens prompting you to save a zip file.
This zip file contains the certificates corresponding to the added user. Save the file and give it using a
secure method (e.g. not via e-mail) to the new remote user. The zip file contains all information needed
in order to connect to the SSL-VPN server running on your OxyGEN miniOffice.
Note
There is no way of re-generating the certificates corresponding to a configured SSL VPN
username. In case you want to do so, the only option is to revoke the username and
then add it again.
Client Mode
When OxyGEN miniOffice is configured to run in Client mode, the following fields appear in the SSL-VPN
web configuration page presented in Figure 11.4. The first task is to specify the hostname or IP address
of the SSL-VPN server in the
Host/IP
field. When using a Routed type of tunnel, it is also possible to select
if
NAT
(Network Address Translation) is going to be used over the tunnel.
This way, once the server
assigns an IP address to the client, all devices in the LAN behind the client OxyGEN miniOffice are going
to appear to the server as if they have the client’s tunnel IP address. If, on the other hand, you have
selected a Bridged type of tunnel, you must only select which LAN Service is going to be bridged over
the SSL VPN tunnel. Once you have entered the correct values, click
Apply
in order to activate your
settings.
In order to finish with the secure connection to the SSL-VPN server, you will also need to install the
corresponding certificate files. These certificates must be provided to you by the administrator of the
SSL-VPN server. In the case of an OxyGEN miniOffice acting as the server, this is the zip file that was
Gennet s.a.
201
Page 202 / 237
OxyGEN
mini
Office
Administrator’s Guide
saved once the username was added to the users database. The zip file containing all the appropriate
certificate files can be uploaded using the
Browse
key and finally by clicking the
Upload
key.
How to Connect from a PC
In order to connect from a PC to an OxyGEN miniOffice configured to run in Server mode, you will need
to install the
OpenVPN client
. To download OpenVPN, go to
http://openvpn.net/download.html
.
For Microsoft Windows 2000 or later versions, a self-installing exe file can be downloaded. It is highly
recommended that you install OpenVPN version 2.1 or later, since it includes a GUI that significantly
simplifies the OpenVPN operation.
After running the Windows installer, OpenVPN is ready to use. The last thing remaining before being
able to connect to the OxyGEN server is to install the corresponding certificate files. To this end, you
must unzip the zip file that was generated by the server upon the user creation. The correct path for
an installation including the OpenVPN GUI is usually under
Program Files/OpenVPN/config/
.
Place all files contained in the zip archive into this directory.
The file
connect.ovpn
is the main
configuration file containing all the OpenVPN connection parameters.
If your OxyGEN server is using the
Dynamic DNS
service in order to update its dynamic IP address,
you are ready to connect since the connect.ovpn file already contains the corresponding hostname of
the server. Otherwise, you must manually configure the connect.ovpn file and modify accordingly the
line starting with the keyword
remote
. The syntax of the command is
remote server port
where
server
is the hostname or IP of the OpenVPN server and
port
is equal to 1194.
Once the connect.ovpn file contains the correct hostname or IP of the OpenVPN server, you are
ready to connect. You can connect directly from the connect.ovpn file by right-clicking and selecting
Start OpenVPN
on this configuration file. Once running, you can use the
F4
key to exit. Alternatively,
if you have installed the GUI, start it. The
icon appears on the taskbar. Right-click on it and select
Connect
in order to start the SSL-VPN connection towards the OxyGEN server. Once connected, the red
screens on the GUI icon will turn into green and a notification will appear with the assigned IP address.
Please refer to
http://openvpn.net/
for more detailed information about OpenVPN installation and
configuration for Windows-based PCs but also for other operating systems.
WARNING
If you have configured IP static routes on your OxyGEN SSL-VPN server, these routes are
automatically going to be passed to every client upon successful connection.
Gennet s.a.
202
Page 203 / 237
OxyGEN
mini
Office
Administrator’s Guide
WARNING
You must use the same Type (Routed or Bridged) on both ends of the SSL VPN tunnel,
or otherwise the two devices will fail to connect.
Gennet s.a.
203
Page 204 / 237
OxyGEN
mini
Office
Administrator’s Guide
Gennet s.a.
204
Page 205 / 237
F
ISDN Interfaces
ISDN Cable Pinout
The OxyGEN miniOffice is optionally equipped with one or more ISDN interfaces (BRI or PRI). These ISDN
interfaces are programmable and can be configured to operate either in
External (TE)
or
Internal (NT)
mode (please refer to section
ISDN Interfaces
on page 114 for details). External mode must be selected
in order to connect the interface to an ISDN Network Termination Unit (NT) and the public ISDN network.
On the other hand, Internal mode must be selected in order to connect to an ISDN PBX replacing the
ISDN Network Termination Unit and the public ISDN network with the broadband VoIP network.
Although programmable, you will need a different type of cable for each mode of operation. The
default pinout of both BRI and PRI ISDN interfaces corresponds to NT mode operation. This means that,
when a port is configured to operate in Internal (NT) mode, a straight-through cable must be used for the
connection to the corresponding TE ISDN interface (see tables F.2 and F.4). On the other hand, when a
port is configured to operate in External (TE) mode, an ISDN crossover cable is required (see tables F.3
and F.5).
ISDN S-bus Termination
The BRI S-Interface is a 4-wire interface, with separate Transmit and Receive pairs. It can operate in four
modes:
205

Rate

4.5 / 5 based on 2 votes.

Popular Gennet-OxyGEN Models

Bookmark Our Site

Press Ctrl + D to add this site to your favorites!

Share
Top