ZyXEL Communications ZYWALL 5 - Page 14

ZyWALL 5 User’s Guide
12
Chapter 12
Content Filtering Registration and Reports....................................................... 201
12.1 Introduction to myZyXEL.com ........................................................................201
12.1.1 A Note on myZyXEL.com Numbers ......................................................202
12.2 myZyXEL.com Account Registration ..............................................................202
12.3 Registering Your ZyXEL Device .....................................................................204
12.4 Content Filtering Registration .........................................................................207
12.5 Checking Content Filtering Activation ............................................................209
12.6 Updating Product Registration Information ....................................................210
12.7 Viewing Content Filtering Reports ..................................................................210
12.8 Configuration File ...........................................................................................212
Chapter 13
Introduction to IPSec ........................................................................................... 213
13.1 VPN Overview ................................................................................................213
13.1.1 IPSec ....................................................................................................213
13.1.2 Security Association .............................................................................213
13.1.3 Other Terminology ................................................................................213
13.1.3.1 Encryption ...................................................................................213
13.1.3.2 Data Confidentiality .....................................................................214
13.1.3.3 Data Integrity ...............................................................................214
13.1.3.4 Data Origin Authentication ..........................................................214
13.1.4 VPN Applications ..................................................................................214
13.1.4.1 Linking Two or More Private Networks Together .........................214
13.1.4.2 Accessing Network Resources When NAT Is Enabled ...............214
13.1.4.3 Unsupported IP Applications .......................................................214
13.2 IPSec Architecture .........................................................................................215
13.2.1 IPSec Algorithms ..................................................................................215
13.2.2 Key Management ..................................................................................215
13.3 Encapsulation .................................................................................................215
13.3.1 Transport Mode ....................................................................................216
13.3.2 Tunnel Mode .........................................................................................216
13.4 IPSec and NAT ...............................................................................................216
Chapter 14
VPN Screens......................................................................................................... 219
14.1 VPN/IPSec Overview .....................................................................................219
14.2 IPSec Algorithms ............................................................................................219
14.2.1 AH (Authentication Header) Protocol ....................................................219
14.2.2 ESP (Encapsulating Security Payload) Protocol ..................................219
14.3 My ZyWALL ....................................................................................................220
14.4 Remote Gateway Address .............................................................................220
14.4.1 Dynamic Remote Gateway Address .....................................................221