Barracuda Web Security Gateway 310, Installation

Barracuda Web Security Gateway

Step 2 - Installation

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Configure Your Corporate Firewall

For maximum security, Barracuda recommends placing your Barracuda Web Security Gateway behind
a corporate firewall. If your Barracuda Web Security Gateway is located behind the firewall, refer to
the table below for the ports that need to be opened on your corporate firewall to allow
communication between the Barracuda Web Security Gateway and remote servers. See also 

Required

Outbound Connections for Barracuda Appliances

.

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 In/Out

TCP

To access web interface.

8002 In/Out

TCP

Synchronization between linked systems. For more information, see
 

High Availability - Clustering the Barracuda Web Security Gateway

23557 In/Out

TCP

The Barracuda Web Security Gateway defaults to port 80 when
using 

Barracuda Cloud Control

. However, Barracuda Cloud Control

also listens on port 23557 which may also be used to communicate,
and should be allowed if you plan to use Barracuda Cloud Control or
cloud backups.

In addition to the ports listed above, you may have to configure your corporate firewall to allow the
Barracuda Web Security Gateway 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
Security Gateway as well.

If your Barracuda Web Security Gateway is located in a DMZ, you may need to configure your
corporate firewall to allow the Barracuda Web Security Gateway to send notifications to your internal
email server. In this case, if your email server requires credentials for authentication, configure the
Username and Password in the Email Notifications section of the BASIC > Administration page
in the Barracuda Web Security Gateway web interface.

Continue with 

Step 3 - Configure the Barracuda Web Security Gateway

.