ZyXEL P-202H User Guide - Page 96
Connection Direction, Firewall Rules Summary
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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 nonrestricted 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