Lan To Wan Rules; Wan To Lan Rules; Figure 66 Lan To Wan Traffic - ZyXEL Communications ZyWall 70 User Manual

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ZyWALL 70 User's Guide

LAN to LAN/ZyWALL, WAN to WAN/ZyWALL and DMZ to DMZ/ZyWALL rules apply

to packets coming in on the associated interface (LAN, WAN, or DMZ respectively). LAN to

LAN/ZyWALL means policies for LAN-to-ZyWALL (the policies for managing the

ZyWALL through the LAN interface) and policies for LAN-to-LAN (the policies that control

routing between two subnets on the LAN). Similarly, WAN to WAN/ZyWALL and DMZ to

DMZ/ZyWALL polices apply in the same way to the WAN and DMZ ports.

10.4.1 LAN To WAN Rules

The default rule for LAN to WAN traffic is that all users on the LAN are allowed non-

restricted access to the WAN. When you configure a LAN to WAN rule, you in essence want

to limit some or all users from accessing certain services on the WAN. See the following

The default rule for WAN to LAN traffic blocks all incoming connections (WAN to LAN). If

you wish to allow certain WAN users to have access to your LAN, you will need to create

custom rules to allow it.

See the following figure.

Chapter 10 Firewall Screens