User's Manual

Version 3.03 SPEEDLAN 9000 Series Installation and Operation User Guide
3-62 General Functions of the Configurator
Tips on Creating Rules for Your Firewall
Before you create a rule, make sure you:
• Understand the purpose of the rule. For example, will this rule block all
IRC traffic from the LAN to the Internet? Will this rule allow a remote mail
server to send data at the same time over the Internet to an internal mail
server?
• Do you want the firewall to allow or deny certain traffic? What type of
traffic? What type of IP protocol?
• What is the direction of the traffic: from the Internet to the LAN or from the
LAN to the Internet?
• What IP services will this rule affect?
• Which nodes (or workstations) on the LAN will these rules affect? Make a
mental note of the IP address (those on the private and public LANs) that
these rules will affect.
• Consider the security of the network. For example, once you enable this
rule, which areas of the network will become more vulnerable?
• Will this rule override any other rules you created?
To control traffic flow through the router, choose Firewall from the Forwarding menu.
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