ZyXEL Communications ZYWALL10 manual 21

	ZyWALL 10 Internet Security Gateway
Figure 12-1 Telnet Configuration on a TCP/IP Network .............................................................................	12-1
Figure 13-1 ZyWALL Firewall Application ................................................................................................	13-3
Figure 13-2 Three-Way Handshake .............................................................................................................	13-5
Figure 13-3 SYN Flood................................................................................................................................	13-5
Figure 13-4 Smurf Attack ............................................................................................................................	13-6
Figure 13-5 Stateful Inspection....................................................................................................................	13-7
Figure 14-1 SMT Main Menu ......................................................................................................................	14-1
Figure 14-2 Menu 21 — Filter and Firewall Setup ......................................................................................	14-1
Figure 14-3 Menu 21.2 — Firewall Setup ...................................................................................................	14-2
Figure 14-4 View Firewall Log....................................................................................................................	14-4
Figure 14-5 Big Picture — Filtering, Firewall and NAT..............................................................................	14-6
Figure 15-1 Login screen as seen in Netscape .............................................................................................	15-1
Figure 15-2 ZyWALL Web Configurator Welcome Screen .........................................................................	15-2
Figure 15-3 Enabling the Firewall ...............................................................................................................	15-3
Figure 15-4 E-mail Screen ...........................................................................................................................	15-4
Figure 15-5 E-mail Log................................................................................................................................	15-7
Figure 15-6 Attack Alert ..............................................................................................................................	15-9
Figure 16-1 LAN to WAN Traffic................................................................................................................	16-3
Figure 16-2 WAN to LAN Traffic................................................................................................................	16-4
Figure 16-3 Firewall Rules Summary — First Screen .................................................................................	16-5
Figure 16-4 Creating/Editing A Firewall Rule...........................................................................................	16-10
Figure 16-5 Adding/Editing Source and Destination Addresses................................................................	16-12
Figure 16-6 Timeout Screen.......................................................................................................................	16-14
Figure 17-1 Custom Ports ............................................................................................................................	17-1
Figure 17-2 Creating/Editing A Custom Port ..............................................................................................	17-3
Figure 18-1 Log Screen................................................................................................................................	18-1
Figure 19-1 Activate The Firewall...............................................................................................................	19-2

List of Figures xxi