Avaya 3.7 User Manual

Page of 326
Preparing to configure your network
Issue 4 May 2005
25
Public-backup zone. Public-backup zone is the backup interface to the primary public 
interface for use when Failover is configured.
Semiprivate zone. Semiprivate zone is used for media such as wireless LAN, where the 
network is considered part of the protected network, but the media may be vulnerable to 
attack. The semi-private zone provides the additional security measure of IPSec 
encryption to prevent compromise to the network, for example, VPN over wireless 
protection.
DMZ zone. DMZ (Demilitarized zone) is used for an area in the company network that 
needs to be accessible from the public networks, for example, email, FTP, and Web 
servers, but the area is not considered part of the internal private network. Servers in the 
DMZ typically have publicly routable IP addresses or should use advanced NAT within the 
security gateway.
Management zone. Management zone is used to simplify network deployments, to 
eliminate enterprise network dependencies on switches or routers. The management 
network interface is usually used as an access point for a dedicated VPNmanager 
management station or as a dedicated interface for dumping log messages to a syslog 
server.
Table 1: Network zones 
Media type
SG5 and SG5X
SG200
SG203
SG208
Ethernet0
Public
Public
Private
Private
Ethernet1
Private
Private
Public
Public
Ethernet2
NA
Unused
Public backup 
Private
Semiprivate 
DMZ 
Management
Unused
Public backup
Private
Semiprivate 
DMZ 
Management
Ethernet3 to 
Ethernet5
NA
NA
Unused
Public backup
Private
Semiprivate 
DMZ 
Management
Unused
Public backup
Private
Semiprivate 
DMZ 
Management