ZyXEL Communications ZyWALL 2 Series manual 16

ZyWALL 2 Series User’s Guide

Figure 8-3 Multiple Servers Behind NAT Example........................................................................................	8-6
Figure 8-4 SUA Server ...................................................................................................................................	8-7
Figure 8-5 Address Mapping ..........................................................................................................................	8-9
Figure 8-6 Address Mapping Rule................................................................................................................	8-10
Figure 8-7 Trigger Port Forwarding Example...............................................................................................	8-12
Figure 8-8 Trigger Port .................................................................................................................................	8-13
Figure 9-1 Example of Static Routing Topology ............................................................................................	9-1
Figure 9-2 Static Route Screen .......................................................................................................................	9-2
Figure 9-3 Edit IP Static Route .......................................................................................................................	9-3
Figure 10-1 ZyWALL Firewall Application .................................................................................................	10-3
Figure 10-2 Three-Way Handshake ..............................................................................................................	10-5
Figure 10-3 SYN Flood ................................................................................................................................	10-5
Figure 10-4 Smurf Attack .............................................................................................................................	10-6
Figure 10-5 Stateful Inspection.....................................................................................................................	10-8
Figure 11-1 LAN to WAN Traffic.................................................................................................................	11-4
Figure 11-2 WAN to LAN Traffic.................................................................................................................	11-5
Figure 11-3 Enabling the Firewall ................................................................................................................	11-6
Figure 11-4 Creating/Editing A Firewall Rule ..............................................................................................	11-9
Figure 11-5 Adding/Editing Source and Destination Addresses .................................................................	11-11
Figure 11-6 Creating/Editing A Custom Port..............................................................................................	11-12
Figure 11-7 Firewall IP Config Screen .......................................................................................................	11-14
Figure 11-8 Firewall Rule Edit IP Example................................................................................................	11-15
Figure 11-9 Edit Custom Port Example......................................................................................................	11-15
Figure 11-10 MyService Rule Configuration .............................................................................................	11-16
Figure 11-11 My Service Example Rule Summary ....................................................................................	11-17
Figure 11-12 Attack Alert ...........................................................................................................................	11-22
Figure 12-1 Content Filter : General.............................................................................................................	12-2
Figure 12-2 Content Filtering Lookup Procedure.........................................................................................	12-4
Figure 12-3 Content Filter : Categories ........................................................................................................	12-6
Figure 12-4 Content Filter : Customization ................................................................................................	12-15
Figure 13-1 Encryption and Decryption .......................................................................................................	13-2
Figure 13-2 IPSec Architecture.....................................................................................................................	13-3
Figure 13-3 Transport and Tunnel Mode IPSec Encapsulation.....................................................................	13-4
Figure 14-1 IPSec Summary Fields ..............................................................................................................	14-3
Figure 14-2 VPN Rules.................................................................................................................................	14-4
Figure 14-3 NAT Router Between IPSec Routers.........................................................................................	14-6
Figure 14-4 VPN Host using Intranet DNS Server Example........................................................................	14-7
Figure 14-5 Client-to-Site VPN Example...................................................................................................	14-10
Figure 14-6 Site-to-Site VPN Example ......................................................................................................	14-11
Figure 14-7 Basic IKE VPN Rule Edit .......................................................................................................	14-12
Figure 14-8 Two Phases to Set Up the IPSec SA........................................................................................	14-22

xvi List of Figures