ZyWALL 2 Plus User’s Guide
14 Table of Contents
8.11 Threshold Screen ...........................................................................................145
8.12 Service ..........................................................................................................146
8.12.1 Firewall Edit Custom Service ................................................................148
8.13 Solving the Asymmetrical Route Problem Example .......................................149
8.14 My Service Firewall Rule Example .................................................................150
Chapter 9
Content Filtering Screens ................................................................................... 155
9.1 Content Filtering Overview ...............................................................................155
9.1.1 Restrict Web Features ............................................................................155
9.1.2 Create a Filter List ..................................................................................155
9.1.3 Customize Web Site Access ..................................................................155
9.2 Content Filter General ...................................................................................155
9.3 Category Based Content Filtering ....................................................................157
9.4 Content Filter Categories ..............................................................................158
9.5 Content Filter Customization .........................................................................165
9.6 Customizing Keyword Blocking URL Checking ................................................167
9.6.1 Domain Name or IP Address URL Checking ..........................................167
9.6.2 Full Path URL Checking .........................................................................167
9.6.3 File Name URL Checking .......................................................................167
9.7 Content Filtering Cache ...................................................................................168
Chapter 10
Content Filtering Reports .................................................................................... 171
10.1 Checking Content Filtering Activation ............................................................171
10.2 Viewing Content Filtering Reports ..................................................................171
10.3 Web Site Submission .....................................................................................176
Chapter 11
IPSec VPN ............................................................................................................. 179
11.1 IPSec VPN Overview .....................................................................................179
11.1.1 IKE SA ..................................................................................................180
11.1.1.1 ZyWALL and Remote IPSec Router ............................................183
11.1.1.2 IKE SA Proposal ..........................................................................183
11.1.1.3 Authentication Key and Extended Authentication (X-Auth) .........183
11.1.2 IPSec SAs Using IKE SAs ....................................................................185
11.1.2.1 IPSec SA Proposal ......................................................................185
11.1.2.2 Local and Remote Network .........................................................186
11.1.2.3 IPSec SA Properties ....................................................................186
11.1.3 IPSec SA Using Manual Keys ...............................................................186
11.1.4 Additional IPSec VPN Topics ................................................................187
11.1.4.1 Active Protocols, Encryption Algorithms, and Authentication
Algorithms ...........................................................................................187
