User's Manual Part 1

Configuring High Availability
Chapter 5: Managing Your Network 117
Configuring High Availability
You can install two Safe@Office appliances on your network, one acting as
the “Master”, the de uted,
and one acting as th ally
and transparently ta t your
network is consistent ed
to the Internet.
The Master and Bac have separate IP addresses within the local
network. In addition ress,
which is the default
address is used by t eway, which sends periodic signals, or
“heartbeats”, to the net rtbeat
has stopped (indicat er of
the virtual IP addre e Master
gateway is running sumes
its roles.
Before configuring ust be
met:
• You must have t
• The Safe@Offic ons
and firewall rule
• The Safe@Offic
addresses, and t me subnet. For
information on configuring LAN and DMZ addresses, see
Configuring Network Settings on page 93.
• The LAN ports of the two Safe@Office appliances must be
connected via a hub or a switch.
You can configure both the LAN network and the DMZ network for High
Availability.
fault gateway through which all network traffic is ro
e “Backup”. If the Master fails, the Backup automatic
kes over all the roles of the Master. This ensures tha
ly protected by a Safe@Office appliance and connect
kup each
, the Master and Backup share a single virtual IP add
gateway address for the local network. The virtual IP
he Master gat
work. If the Backup gateway detects that the hea
ing that the Master gateway has failed), it takes ov
ss and all of the Master gateway’s roles. When th
once again, it reclaims the virtual IP address and re
High Availability, the following requirements m
wo identical Safe@Office appliances.
e appliances must have identical firmware versi
s.
e appliances must have different LAN and DMZ IP
hey must be located on the sa