Setting up the network
76 Avaya VPNmanager Configuration Guide Release 3.7
Private port tab
For SGs with VPNos 4.2 or VPNos 4.3, the Private Port tab is used to configure of the private IP
address. In addition, you can configure the device to act as a DHCP server on the private port
or you can configure a DHCP relay.
Note:
Note: For SGs with VPNos 4.4 and higher, configure the pr ivate port address using the
Interfaces tab.
If a local DHCP server is configured, the security gateway assigns IP addresses to the
computers or the IP telephones that are behind the security gateway. If your DHCP server is on
the public side, a DHCP relay can be configured to obtain IP addresses from this DHCP server.
If the DHCP server is unreachable, the relay can be made to fall back to the local DHCP server.
Figure 22: Private port tab with VPNos 4.2 or VPNos 4.3
If you plan to use the security gateway’s private port local DHCP server capabi lity to support the
IP devices connected to your LAN (default), be sure to complete the DHCP setup under the
local DHCP Server portion of the screen.
Local DHCP Server. - This portion of the screen is used to configure the security gateway as a
DHCP server on the private port. The IP Address range must be configured and should fall
within the range of the private IP Address subnet. The domain name is provided and the WINS
server can be configured.
When deploying the security gateway, you need a unique DHCP range for each security
gateway on the VPN.