Source Address; Destination Address; Connection Direction; Lan To Wan Rules - ZyXEL Communications P-202H V2 User Manual

P-202H Plus v2 User's Guide

9.5.3.3 Source Address

What is the connection's source address; is it on the LAN or WAN? Is it a single IP, a range of
IPs or a subnet?

9.5.3.4 Destination Address

What is the connection's destination address; is it on the LAN or WAN? Is it a single IP, a
range of IPs or a subnet?

9.6 Connection Direction

This section describes examples for firewall rules for connections going from LAN to WAN
and from WAN to LAN.

9.6.1 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. WAN to LAN Rules

9.6.2 WAN to LAN Rules

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.

9.7 Firewall Rules Summary

Note: The fields in the Rule Summary screens are the same for Local Network to
Internet Set and Internet to Local Network Set, so the discussion below
refers to both.
Click on Firewall, then Rule Summary to bring up the following screen. This screen is a
summary of the existing rules. Note the order in which the rules are listed.
Note: The ordering of your rules is very important as rules are applied in turn.
95 Chapter 9 Firewall Configuration