ZyXEL Communications ZyXEL ZyWALL 50 User Manual page 21

ZyWALL 50 Internet Security Gateway
Figure 6-19 Example 3: Final Menu 15.1.1.................................................................................................. 6-21
Figure 6-20 Example 3: Menu 15.2.............................................................................................................. 6-21
Figure 6-21 NAT Example 4 ........................................................................................................................ 6-22
Figure 6-22 Example 4: Menu 15.1.1.1 - Address Mapping Rule ............................................................. 6-23
Figure 6-23 Example 4: Menu 15.1.1 - Address Mapping Rules............................................................... 6-23
Figure 7-1 ZyWALL Firewall Application ..................................................................................................... 7-3
Figure 7-2 Three-Way Handshake.................................................................................................................. 7-5
Figure 7-3 SYN Flood .................................................................................................................................... 7-5
Figure 7-4 Smurf Attack................................................................................................................................. 7-6
Figure 7-5 Stateful Inspection ........................................................................................................................ 7-8
Figure 8-1 Menu 21 - Filter and Firewall Setup .......................................................................................... 8-1
Figure 8-2 Menu 21.2 - Firewall Setup........................................................................................................ 8-2
Figure 8-3 Example Firewall Log .................................................................................................................. 8-2
Figure 9-1 Main Menu ................................................................................................................................... 9-2
Figure 9-2 Enabling the Firewall.................................................................................................................... 9-3
Figure 9-3 E-mail Screen................................................................................................................................ 9-4
Figure 9-4 E-mail Log .................................................................................................................................... 9-7
Figure 9-5 Attack Alert................................................................................................................................... 9-9
Figure 10-1 LAN to WAN Traffic ................................................................................................................ 10-3
Figure 10-2 WAN to LAN Traffic ................................................................................................................ 10-4
Figure 10-3 Firewall Rules Summary - First Screen ................................................................................. 10-5
Figure 10-4 Creating/Editing A Firewall Rule............................................................................................ 10-10
Figure 10-5 Adding/Editing Source and Destination Addresses................................................................. 10-12
Figure 10-6 Timeout Screen ....................................................................................................................... 10-14
Figure 11-1 Custom Ports............................................................................................................................. 11-1
Figure 11-2 Creating/Editing A Custom Port ............................................................................................... 11-3
Figure 12-1 Log Screen ................................................................................................................................ 12-1
List Of Figures xxi