ZyXEL Communications P-660HW-Tx v3 User Manual page 235

Intra-LAN Traffic
The WAN IP Passthrough computer can access a LAN computer with all firewall
settings. But traffic from a LAN computer to the WAN IP Passthrough goes through
the firewall and NAT.
Figure 86 Intra-LAN Traffic
WAN IP Passthrough and the Firewall
If you want the WAN IP Passthrough computer to access the Internet, you must
configure the firewall as Medium, Low, or Off. If you want to enable incoming
traffic to the WAN IP Passthrough, you must configure the firewall as Low or Off.
See Section 9.2 on page 186
Figure 87 WAN IP Passthrough and the firewall
LAN
WIP
The table below shows the equivalent firewall rules when a LAN computer
becomes a WAN IP Passthrough computer. For example, WIP to WAN traffic uses
the LAN to WAN firewall rule. See
on firewall rules.
P-660HW-Tx v3 User's Guide
WIP
H/M/L/C/X
LAN
for more information on configuring the firewall.
L/X
M/L/X
Section 9.2.1 on page 186
Chapter 13 WAN IP Passthrough
NAT
WAN
for more information
235