Specifications

Chapter 3: Configuring the Barracuda Link Balancer 37
It is important that the time zone is set correctly because this information is used to coordinate traffic
distribution and in all logs and reports. If two Barracuda Link Balancers are to be clustered, the time
zone must be the same on both before the cluster can be created.
Enabling SSL for Administration
You can choose to require that only secure SSL connections can access the Web user interface. SSL
ensures that your passwords and the rest of the data transmitted to and received from the Web user
interface are encrypted. The
Advanced > Secure Administration page allows you to configure SSL.
In order to only allow secured connections when accessing the Web user interface, you need to supply
a digital SSL certificate which will be stored on the Barracuda Link Balancer. This certificate is used
as part of the connection process between client and server (in this case, a browser and the Web user
interface on the Barracuda Link Balancer). The certificate contains the server name, the trusted
certificate authority, and the server’s public encryption key.
The SSL certificate which you supply may be either private or trusted. A private, or self-signed,
certificate provides strong encryption without the cost of purchasing a certificate from a trusted
certificate authority (CA). However, the client Web browser will be unable to verify the authenticity
of the certificate and a warning will be sent about the unverified certificate. To avoid this warning,
download the Private Root Certificate and import it into each browser that accesses the Barracuda
Link Balancer Web user interface. You may create your own private certificate using the
Advanced
> Secure Administration page.
Instead of a private certification, you may also use the default pre-loaded Barracuda Networks
certificate. The client Web browser will display a warning because the hostname of this certificate is
“barracuda.barracudanetworks.com” and it is not a trusted certificate. Because of this, access to the
Web user interface using the default certificate may be less secure.
A trusted certificate is a certificate signed by a trusted certificate authority (CA). The benefit of this
certificate type is that the signed certificate is recognized by the browser as trusted, thus preventing
the need for manual download of the Private Root Certificate. Use the
Advanced > Secure
Administration
page to create a Certificate Signing Request which you can submit to a Certificate
Authority to purchase a trusted certificate.
Note: The Barracuda Link Balancer automatically reboots when you change the timezone.