ZyXEL Communications Internet Security Gateway ZyWALL 100, User Manual

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ZyWALL Series Internet Security Gateway
xxii List of Figures
Figure 8-1 WAN Setup: Route........................................................................................................................8-2
Figure 8-2 Ethernet Encapsulation..................................................................................................................8-3
Figure 8-3 PPPoE Encapsulation....................................................................................................................8-5
Figure 8-4 PPTP Encapsulation ......................................................................................................................8-7
Figure 8-5 IP Setup .........................................................................................................................................8-9
Figure 8-6 MAC Setup .................................................................................................................................8-12
Figure 8-7 Traffic Redirect WAN Setup .......................................................................................................8-12
Figure 8-8 Traffic Redirect LAN Setup ........................................................................................................8-13
Figure 8-9 Traffic Redirect ...........................................................................................................................8-14
Figure 8-10 Dial Backup Setup ....................................................................................................................8-16
Figure 8-11 Advanced Setup.........................................................................................................................8-21
Figure 9-1 How NAT Works...........................................................................................................................9-3
Figure 9-2 NAT Application With IP Alias .....................................................................................................9-4
Figure 9-3 Multiple Servers Behind NAT Example........................................................................................9-8
Figure 9-4 SUA Server ...................................................................................................................................9-9
Figure 9-5 Address Mapping ........................................................................................................................9-10
Figure 9-6Address Mapping Edit..................................................................................................................9-12
Figure 9-7 Trigger Port Forwarding Process: Example ................................................................................9-14
Figure 9-8 Trigger Port .................................................................................................................................9-15
Figure 10-1 Example of Static Routing Topology ........................................................................................10-1
Figure 10-2 IP Static Route...........................................................................................................................10-2
Figure 10-3 Edit IP Static Route ...................................................................................................................10-3
Figure 11-1 ZyWALL Firewall Application..................................................................................................11-3
Figure 11-2 Three-Way Handshake ..............................................................................................................11-5
Figure 11-3 SYN Flood ................................................................................................................................11-5
Figure 11-4 Smurf Attack .............................................................................................................................11-6
Figure 11-5 Stateful Inspection.....................................................................................................................11-8
Figure 12-1 LAN to WAN Traffic.................................................................................................................12-4