Prestige 2602HW Series User’s Guide

4Does a rule that allows Internet users access to resources on the LAN create a security vulnerability? For example, if FTP ports (TCP 20, 21) are allowed from the Internet to the LAN, Internet users may be able to connect to computers with running FTP servers.

5Does this rule conflict with any existing rules?

6Once these questions have been answered, adding rules is simply a matter of plugging the information into the correct fields in the web configurator screens.

14.3.3Key Fields For Configuring Rules

14.3.3.1 Action

Should the action be to Block or Forward?

Note: “Block” means the firewall silently discards the packet.

14.3.3.2 Service

Select the service from the Service scrolling list box. If the service is not listed, it is necessary to first define it. See Section 14.10 on page 184 for more information on predefined services.

14.3.3.3 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?

14.3.3.4 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?

14.4 Connection Direction Example

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

LAN to LAN/ Router and WAN to WAN/ Router rules applies to packets coming in on the associated interface (LAN or WAN respectively). LAN to LAN/ Router means policies for LAN-to-Prestige (the policies for managing the Prestige 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/ Router polices apply in the same way to the WAN port.

Chapter 14 Firewall Configuration

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