ZyXEL Communications 2602HW Series Chapter, Chapter, Content Filtering, Introduction to IPSec

	Prestige 2602HW Series User’s Guide
14.4.2 WAN to LAN Rules ...............................................................................		172
14.4.3 Alerts .....................................................................................................		173
14.5	Configuring Basic Firewall Settings ................................................................	173
14.6	Rule Summary ...............................................................................................	174
14.6.1 Configuring Firewall Rules ....................................................................		176
14.7	Customized Services .....................................................................................	179
14.8	Creating/Editing A Customized Service .........................................................	179
14.9	Example Firewall Rule ...................................................................................	180
14.10 Predefined Services .....................................................................................		184
14.11 Anti-Probing ..................................................................................................		186
14.12 DOS Thresholds ...........................................................................................		187
14.12.1 Threshold Values ................................................................................		188
14.12.2 Half-Open Sessions ............................................................................		188
	14.12.2.1 TCP Maximum Incomplete and Blocking Time .........................	188
Chapter 15
Content Filtering ..................................................................................................		191
15.1	Content Filtering Overview .............................................................................	191
15.2	Configuring Keyword Blocking .......................................................................	191
15.3	Configuring the Schedule ..............................................................................	192
15.4	Configuring Trusted Computers .....................................................................	193
Chapter 16
Introduction to IPSec ...........................................................................................		195
16.1	VPN Overview ................................................................................................	195
16.1.1 IPSec ....................................................................................................		195
16.1.2 Security Association .............................................................................		195
16.1.3 Other Terminology ................................................................................		195
	16.1.3.1 Encryption ...................................................................................	195
	16.1.3.2 Data Confidentiality .....................................................................	196
	16.1.3.3 Data Integrity ...............................................................................	196
	16.1.3.4 Data Origin Authentication ..........................................................	196
16.1.4 VPN Applications ..................................................................................		196
16.2	IPSec Architecture .........................................................................................	197
16.2.1 IPSec Algorithms ..................................................................................		197
16.2.2 Key Management ..................................................................................		197
16.3	Encapsulation .................................................................................................	197
16.3.1 Transport Mode ....................................................................................		198
16.3.2 Tunnel Mode ........................................................................................		198
16.4	IPSec and NAT ...............................................................................................	198

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