User's Manual

viii Contents
v1.0, March 2008
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 ..........................................................................................3-6
Creating the Network Database ...............................................................................3-6
Setting Up Address Reservation ............................................................................3-10
Configuring Static Routes .............................................................................................3-10
Static Route Example .............................................................................................3-11
RIP Configuration ...................................................................................................3-12
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
Session Limit ..........................................................................................................4-12
Inbound Rules Examples .......................................................................................4-13
Hosting A Local Public Web Server .................................................................4-13
Allowing Videoconference from Restricted Addresses ....................................4-14
Setting Up One-to-One NAT Mapping .............................................................4-15
Specifying an Exposed Host ............................................................................4-17
Outbound Rules Example – Blocking Instant Messenger ......................................4-18
Adding Customized Services ........................................................................................4-18
Specifying Quality of Service (QoS) Priorities ..............................................................4-20
Setting a Schedule to Block or Allow Traffic .................................................................4-21