ZyXEL Communications ZyXEL ZyWALL 5 - Manual (Page 13)

ZyWALL 5 User’s Guide
12
11.6.2 Full Path URL Checking ........................................................................200
11.6.3 File Name URL Checking .....................................................................200
11.7 Content Filtering Cache ..................................................................................201
Chapter 12
Content Filtering Registration and Reports....................................................... 203
12.1 Introduction to myZyXEL.com ........................................................................203
12.1.1 A Note on myZyXEL.com Numbers ......................................................204
12.2 myZyXEL.com Account Registration ..............................................................204
12.3 Registering Your ZyXEL Device .....................................................................206
12.4 Content Filtering Registration .........................................................................209
12.5 Checking Content Filtering Activation ............................................................211
12.6 Updating Product Registration Information ....................................................212
12.7 Viewing Content Filtering Reports ..................................................................212
12.8 Configuration File ...........................................................................................214
Chapter 13
Introduction to IPSec ........................................................................................... 215
13.1 VPN Overview ................................................................................................215
13.1.1 IPSec ....................................................................................................215
13.1.2 Security Association .............................................................................215
13.1.3 Other Terminology ................................................................................215
13.1.3.1 Encryption ...................................................................................215
13.1.3.2 Data Confidentiality .....................................................................216
13.1.3.3 Data Integrity ...............................................................................216
13.1.3.4 Data Origin Authentication ..........................................................216
13.1.4 VPN Applications ..................................................................................216
13.1.4.1 Linking Two or More Private Networks Together .........................216
13.1.4.2 Accessing Network Resources When NAT Is Enabled ...............216
13.1.4.3 Unsupported IP Applications .......................................................216
13.2 IPSec Architecture .........................................................................................217
13.2.1 IPSec Algorithms ..................................................................................217
13.2.2 Key Management ..................................................................................217
13.3 Encapsulation .................................................................................................217
13.3.1 Transport Mode ....................................................................................218
13.3.2 Tunnel Mode .........................................................................................218
13.4 IPSec and NAT ...............................................................................................218
Chapter 14
VPN Screens......................................................................................................... 221
14.1 VPN/IPSec Overview .....................................................................................221
14.2 IPSec Algorithms ............................................................................................221
14.2.1 AH (Authentication Header) Protocol ....................................................221