The Load Balancing Case For Firewalls With Quad Wan Ports; Inbound Traffic; Inbound Traffic To Single Wan Port (Reference Case - NETGEAR ProSafe Quad WAN FR538G Reference Manual

The Load Balancing Case for Firewalls With Quad WAN Ports

Load balancing (Figure
when specifying the IP address. Each IP address is either fixed or dynamic based on the ISP: fully-
qualified domain names must be used when the IP address is dynamic and are optional when the IP
address is static.
Figure D-3

Inbound Traffic

Incoming traffic from the Internet is normally discarded by the firewall unless the traffic is a
response to one of your local computers or a service that you have configured in the Inbound Rules
menu. Instead of discarding this traffic, you can have it forwarded to one or more LAN hosts on
your network.
The addressing of the firewall's quad WAN port depends on the configuration being implemented:
Table D-1. IP addressing requirements for exposed hosts in quad WAN port systems
Configuration and
WAN IP address
Inbound traffic
• Port forwarding
• Port triggering
• DMZ port

Inbound Traffic to Single WAN Port (Reference Case)

The Internet IP address of the firewall's WAN port must be known to the public so that the public
can send incoming traffic to the exposed host when this feature is supported and enabled.
Network Planning for Quad WAN Ports
ProSafe Quad WAN Gigabit Firewall FR538G Reference Manual
D-3) for the quad WAN port case is similar to the single WAN port case
Single WAN Port
(reference case)
Fixed Allowed
(FQDN optional)
Dynamic FQDN required
v1.0, November 2007
Quad WAN Port Cases
Rollover
FQDN required
FQDN required
Load Balancing
Allowed
(FQDN optional)
FQDN required
D-7