Barracuda Networks | SSL VPN | Barracuda SSL VPN - Quick Start Guide

Barracuda SSL VPN - Quick Start Guide
The Barracuda SSL VPN provides remote users secure, clientless access to their internal
network. The Barracuda SSL VPN may be installed directly inside the LAN or in a more
complex DMZ configuration.
Getting Started
Follow the instructions in this guide to configure the Barracuda SSL VPN to
accept incoming connections from the Internet. To begin setting up your
Barracuda SSL VPN, you will need the following:
Barracuda SSL VPN
AC Power Cord
Ethernet Cables
VGA Monitor (recommended)
PS2 Keyboard (recommended)
Physical Installation
To install the Barracuda SSL VPN:
1. Fasten the Barracuda SSL VPN to a 19-inch rack or place it in a stable
2. Connect an Ethernet cable from your network switch to the Ethernet port on
the back of the Barracuda SSL VPN.
3. Connect a VGA Monitor, PS2 Keyboard, and AC power cord to the unit.
4. Press the power button on the front panel to turn the unit on.
Configure IP Address and Network Settings
If you have a monitor connected, the Barracuda SSL VPN will display the Boot
Menu initially, and the Administrative Console login prompt once fully booted. To
begin the configuration:
1. Login to the Administrative Console using the admin login:
2. Configure the IP Address, Subnet Mask, Default Gateway, Primary DNS
Server and Secondary DNS Server as appropriate for your network.
If you do not have a monitor and keyboard and want to set the IP address using
the RESET button on the front panel, press and hold the RESET per the
following table:
IP address
Press and hold RESET for…
5 seconds
8 seconds
12 seconds
Open Firewall Ports
If your Barracuda SSL VPN is located behind a corporate firewall, open the
following ports on your external firewall to ensure proper operation:
Port Direction
Remote diagnostics and service (recommended)
Email alerts + One-time passwords
Domain Name Service (DNS)
Firmware and definition updates
Network Time Protocol (NTP)
HTTPS/SSL port for SSL VPN access
8000 Out
Firmware and definition updates (backup)
8000 In*
External appliance administrator port (HTTP)*
8443 In*
External appliance administrator port (HTTPS)*
* Only if appliance management is performed from outside the corporate network
The following ports must be opened if the listed type of access is desired:
1723 In
PPTP access**
L2TP/IPsec access
4500 In
L2TP/IPsec access
** Note: PPTP access also requires GRE (IP protocol 47)
If you also have an internal firewall (due to placing the Barracuda SSL VPN in a
DMZ, for example), then the following must be allowed on your internal firewall:
LDAP/Active Directory read access
LDAP/Active Directory read/write access
Barracuda SSL VPN Configuration
Use a computer with a Web browser that is connected to the same network as
the Barracuda SSL VPN and follow these steps:
1. In your web browser’s address bar, enter http:// followed by the IP address of
the Barracuda SSL VPN, followed by the default Appliance Administrator
web interface HTTP port (:8000). For example, if you configured the
Barracuda SSL VPN with an IP address of, you would type:
2. Log in to the Appliance Administrator web interface as the administrator:
Username: admin Password: admin
3. Go to the BASIC > IP Configuration page and perform the following:
 Verify the IP Address, Subnet Mask, and Default Gateway.
 Verify the Primary and Secondary DNS Server.
 Enter the Default Hostname and Default Domain.
 If you are using a proxy server on your network, you should also verify the
Proxy Server Configuration settings.
4. Complete the rest of the fields on this page and save your changes.
Barracuda SSL VPN
Barracuda SSL VPN - Quick Start Guide
Activate Subscriptions
Verify that the Energize Updates feature is activated on your Barracuda SSL
VPN – this is required to enable further configuration.
1. Go to the Basic > Status page.
2. Under Subscription Status, if Energize Updates is Not Activated, click the
activation link to be redirected to the Barracuda Networks Product Activation
page. Complete activation of your subscription(s).
If it is connected to the Internet, the Barracuda SSL VPN automatically updates
its activation status after you reload the browser page when viewing the Basic >
Status page.
Update the Firmware
Go to the ADVANCED > Firmware Update page. If there is a new Latest
General Release available, perform the following steps to update the system
1. Click the Download Now button located next to the Latest General Release
firmware version. To view the progress of the download progress, click
Refresh. To avoid damaging the Barracuda SSL VPN, do not power off the
system during an update or download
2. When the download is complete, click Apply Now to apply the firmware.
Click OK to acknowledge the reboot message. Applying the firmware takes
a few minutes to complete.
3. After applying the firmware, the Barracuda SSL VPN will automatically
reboot. When the system comes back up, the login page is displayed. Log in
Change the Administrator Password
To avoid unauthorized use, we recommend you change the password for the
default Appliance Administrator web interface to a more secure password.
1. Go to BASIC > Administration to change your password.
2. Complete the rest of the fields on this page.
Route Incoming SSL Connections to the Barracuda SSL VPN
To take advantage of all available features, you must route HTTPS incoming
connections on port 443 to the Barracuda SSL VPN. This is typically achieved by
configuring your corporate firewall to port forward SSL connections directly to the
Barracuda SSL VPN.
Note: The Appliance Administrator web interface ports on 8000/8443 will also
need similar port forward configurations if you intend to manage the appliance
from outside the corporate network.
Verify Incoming Connections to the Barracuda SSL VPN
Once you have configured your corporate firewall to route SSL through to the
Barracuda SSL VPN, you should be able to accept incoming SSL connections.
1. To test the connection, use a web browser from the Internet (not inside the
LAN) to establish an SSL connection to the external IP address of your
corporate firewall. For example, if your firewall’s external IP address is, direct your browser to:
2. If you receive a warning in your browser about an untrusted SSL certificate,
accept the warning to load the page.
3. On the login page for the SSL VPN interface, log in with the credentials for
the VPN administrator:
Username: ssladmin Password: ssladmin
4. You will now be successfully logged in as the VPN administrator, and taken
directly to the SSL VPN Management Interface. From here you can set up
accounts and other resources for users of the Barracuda SSL VPN.
Additional Post-Setup Configuration Items
Your Barracuda SSL VPN should now be able to accept incoming connections
from the Internet. However, the following additional steps should be performed
to fully complete the initial configuration:
Register a hostname with your DNS server for the Barracuda SSL VPN,
such as:
Install an SSL certificate on the Barracuda SSL VPN for the hostname,
to ensure your users can confirm that they are connecting to a genuine
Barracuda SSL VPN that is registered to your organization.
Integrate the Barracuda SSL VPN with your existing user database. To
cleanly integrate with your environment, the Barracuda SSL VPN can
read in user accounts and authenticate against a number of different
databases, including Microsoft Active Directory and LDAP.
Grant users access to resources using the policy framework. Create a
number of policies that best represent your organization's structure and
then link resources and users. Users that are not part of the policy are
denied access while those that are part of the policy are allowed access
to these resources.
Further refine your access policies by managing user access rights.
If your network uses a DMZ, you may wish to configure the Barracuda
SSL VPN in this topology for greater security.
Additional documentation, including the Barracuda SSL VPN Administrator’s
Guide, can be found at
Contact and Copyright Information
Barracuda Networks, Inc. 3175 S. Winchester Blvd, Campbell, CA 95008 USA  phone: 408.342.5400  fax: 408.342.1061 
Copyright 2004-2012  Barracuda Networks, Inc. All rights reserved. Use of this product and this manual is subject to license. Information in this document is
subject to change without notice. Barracuda SSL VPN is a trademark of Barracuda Networks, Inc. All other brand and product names mentioned in this document
are registered trademarks or trademarks of their respective holders. 21-120118-mb
Barracuda SSL VPN
Download PDF