ZyXEL Communications Prestige 652H series User Manual page 9

Chapter 9 Network Address Translation (NAT) Screens..........................................................................9-1
9.1 NAT Overview...........................................................................................................................9-1
9.2 SUA (Single User Account) Versus NAT..................................................................................9-4
9.3 SUA Server ................................................................................................................................9-5
9.4 Selecting the NAT Mode............................................................................................................9-7
9.5 Configuring SUA Server............................................................................................................9-8
9.6 Configuring Address Mapping...................................................................................................9-9
9.7 Editing an Address Mapping Rule ...........................................................................................9-11
Chapter 10 Dynamic DNS Setup...............................................................................................................10-1
10.1 Dynamic DNS ..........................................................................................................................10-1
10.2 Configuring Dynamic DNS......................................................................................................10-1
Chapter 11 Time and Date.........................................................................................................................11-1
11.1 Configuring Time and Date......................................................................................................11-1
Firewalls and Content Filters...................................................................................................................... IV
Chapter 12 Firewalls..................................................................................................................................12-1
12.1 Firewall Overview....................................................................................................................12-1
12.2 Types of Firewalls....................................................................................................................12-1
12.3 Introduction to ZyXEL's Firewall............................................................................................12-2
12.4 Denial of Service......................................................................................................................12-3
12.5 Stateful Inspection....................................................................................................................12-7
12.6 Guidelines For Enhancing Security With Your Firewall .......................................................12-11
12.7 Packet Filtering Vs Firewall...................................................................................................12-12
Chapter 13 Firewall Screens .....................................................................................................................13-1
13.1 Access Methods .......................................................................................................................13-1
13.2 Firewall Policies Overview ......................................................................................................13-1
13.3 Rule Logic Overview ...............................................................................................................13-2
13.4 Connection Direction Examples...............................................................................................13-4
13.5 Configuring Firewall................................................................................................................13-5
13.6 Example Firewall Rule...........................................................................................................13-14
13.7 Predefined Services................................................................................................................13-19
13.8 Anti-Probing...........................................................................................................................13-22
13.9 Alerts......................................................................................................................................13-24
13.10 Configuring Attack Alert .......................................................................................................13-24
Chapter 14 Content Filtering ....................................................................................................................14-1
14.1 Content Filtering Overview......................................................................................................14-1
14.2 Configuring Keyword Blocking...............................................................................................14-1
14.3 Configuring the Schedule.........................................................................................................14-3
14.4 Configuring Trusted Computers...............................................................................................14-4
VPN/IPSec ...................................................................................................................................................... V
Chapter 15 Introduction to IPSec.............................................................................................................15-1
15.1 VPN Overview .........................................................................................................................15-1
Table of Contents
Prestige 652H/HW Series User's Guide
ix