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Barracuda Load Balancer ADC

Step 2 - How to Configure the Barracuda Load Balancer ADC

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Before configuring the IP address and the corporate firewall, complete Step 1 - How to Install the Barracuda Load Balancer ADC Appliance.

Configure the Management IP Address

Once fully booted, the login prompt appears on your monitor. To configure the management IP address:

  1. At the Barracuda login prompt, log in using admin for the username. For the password:

    If your appliance serial number is higher than 1311431, then the default administrator password is the numeric portion of the serial number. If your serial number is 1311431 or lower, then the default administrator password is admin. For help finding the serial number of your appliance, see Serial Number for Hardware and Virtual Appliances.

    Barracuda Networks recommends changing the administrator password. On the console, you can change the admin password from the System menu.

  2. Go to  TCP/IP Configuration .  In the right pane, configure t he addresses as appropriate for your network,  including :  
    • Man a gement IP Address /Netmask
    • Gateway Address
    • Man a gement  VLAN ID (Optional)
    • Primary/Secondary DNS Servers
    • Proxy Server Configuration (Optional)
  3. Select Save to save your changes, and then select Exit .

Configure Your Corporate Firewall

For maximum security, place your Barracuda Load Balancer ADC behind a corporate firewall.

If your Barracuda Load Balancer ADC is located behind a corporate firewall, open the following ports to allow full access to the management port on the Barracuda Load Balancer ADC and also to allow traffic flow for the load balancing services (as described in the last table row):

Port Direction Protocol Description
22/8788/443 Out TCP Remote diagnostics and Technical Support services
53 Out TCP/UDP Domain Name Server (DNS)
80/8000/443 Out TCP

Firmware updates (unless configured to use a proxy)

123 Out UDP Network Time Protocol (NTP)




Initial VM provisioning *

25 Out TCP Sending system alerts and notifications to the administrator via your mail server. This port can be changed on the BASIC > Administration page.
Any ports used by Services as needed as needed

As required to access the VIP address of a load-balanced service. Configure 1:1 NATs as needed. Certain protocols, including FTP and streaming media protocols, require additional ports to be open.

* You can disable the initial provisioning port after the initial provisioning process is complete.

Also, see Deployment Requirements for Open Network Address Ranges on Firewall.

Next Step

Continue with  Step 3 - How to Activate and Update the Barracuda Load Balancer ADC .