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viii
v1.0, January 2007
Programming the Traffic Meter (if Desired) ............................................................2-12
Configuring the WAN Mode ..........................................................................................2-15
Configuring Dynamic DNS (If Needed) .........................................................................2-16
Chapter 3
LAN Configuration
Configuring Your LAN (Local Area Network) ..................................................................3-1
Using the VPN Firewall as a DHCP Server ..............................................................3-1
Configuring Multi-Home LAN IPs .............................................................................3-4
Managing Groups and Hosts ..........................................................................................3-5
Creating the Network Database ...............................................................................3-5
Setting Up Address Reservation ..............................................................................3-8
Configuring Static Routes ...............................................................................................3-8
Static Route Example ...............................................................................................3-9
RIP Configuration ...................................................................................................3-10
Chapter 4
Firewall Protection and Content Filtering
About Firewall Security ...................................................................................................4-1
Using Rules to Block or Allow Specific Kinds of Traffic ..................................................4-1
Services-Based Rules ..............................................................................................4-2
Outbound Rules (Service Blocking) ...................................................................4-2
Inbound Rules (Port Forwarding) ......................................................................4-4
Order of Precedence for Firewall Rules ...................................................................4-6
Setting LAN WAN Rules .................................................................................................4-7
LAN WAN Outbound Services Rules .......................................................................4-8
LAN WAN Inbound Services Rules ..........................................................................4-9
Attack Checks ........................................................................................................4-10
Inbound Rules Examples .......................................................................................4-12
Hosting A Local Public Web Server .................................................................4-12
Allowing Videoconference from Restricted Addresses ....................................4-13
Setting Up One-to-One NAT Mapping .............................................................4-13
Specifying an Exposed Host ............................................................................4-15
Outbound Rules Example – Blocking Instant Messenger ......................................4-16
Adding Customized Services ........................................................................................4-17
Specifying Quality of Service (QoS) Priorities ..............................................................4-19
Setting a Schedule to Block or Allow Traffic .................................................................4-20