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Barracuda Web Filter Release 3.3

20 Chapter 2: Installation and Configuration

To set a new IP address from the administrative console:

1. Connect your keyboard and monitor directly to the Barracuda Web Filter.

2. At the barracuda login prompt, enter admin for the login and admin for the password.

The User Confirmation Requested window displays the current IP configuration of the

Barracuda Web Filter.

3. Using your Tab key, select Change and click Enter to change the IP configuration.

4. Enter the new IP address, subnet mask, and default gateway IP address for your Barracuda Web

Filter. Select Save

to enter your changes. The Primary DNS and Secondary DNS files are

optional. Select

Exit.

The new IP address and network settings are applied to your Barracuda Web Filter.

Step 4. Configure your corporate firewall

If your Barracuda Web Filter is located behind a corporate firewall, refer to Table 2.1 for the ports

that need to be opened on your corporate firewall to allow communication between the Barracuda

Web Filter and remote servers.

In addition to the ports listed above, you may have to configure your corporate firewall to allow the

Barracuda Web Filter to email system alerts and reports. Some organizations create firewall rules that

only allow emails to be sent from the IP address of their email server. In this case, you should

configure your corporate firewall to allow emails to be sent from the Barracuda Web Filter as well.

If your Barracuda Web Filter is located in a DMZ, you may need to configure your corporate firewall

to allow the Barracuda Web Filter to send notifications to your internal email server.

Step 5. Configure the Barracuda Web Filter

After specifying the IP address of the Barracuda Web Filter and opening the necessary ports on your

corporate firewall, configure the Barracuda Web Filter from the administration interface. Make sure

the client’s computer that you configured the Barracuda Web Filter for is connected to the same

network and that the appropriate routing is in place to allow connection to the Barracuda Web Filter’s

IP address via a Web browser.

Table 2.1: Ports to Open on Your Corporate Firewall

Port Direction Protocol Description

22 In/Out TCP Remote diagnostics and technical

support services

25 Out TCP Email and email bounces

53 Out TCP/UDP DNS (Domain Name Server)

80 Out TCP Virus, spyware, category definition

updates, and firmware updates

123 In/Out UDP NTP (Network Time Protocol)

8000 Out TCP See

Step 5. Configure the Barracuda

Web Filter

on page 20.

8001, 8002 In/Out TCP Synchronization between linked

systems. For more information, see

Setting up linked management on

page 32.

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