ZyXEL Communications P-2602HWLNI manual 18

Table of Contents

15.4.1 LAN to WAN Rules .................................................................................................		248
15.4.2 Alerts ......................................................................................................................		248
15.5	General Firewall Policy ...................................................................................................	248
15.6	Firewall Rules Summary .................................................................................................	249
15.6.1 Configuring Firewall Rules ...................................................................................		251
15.6.2 Customized Services ............................................................................................		254
15.6.3 Configuring a Customized Service .......................................................................		254
15.7	Example Firewall Rule .....................................................................................................	255
15.8	DoS Thresholds ..............................................................................................................	259
15.8.1 Threshold Values ...................................................................................................		259
15.8.2 Half-Open Sessions ...............................................................................................		260
15.8.3 Configuring Firewall Thresholds .............................................................................		260
15.9	Firewall Commands .........................................................................................................	262

Chapter 16
Content Filtering ...................................................................................................................			265
16.1		Content Filtering Overview .............................................................................................	265
16.2		Configuring Keyword Blocking ........................................................................................	265
16.3		Configuring the Schedule ..............................................................................................	266
16.4		Configuring Trusted Computers .....................................................................................	267
Chapter 17
Introduction to IPSec............................................................................................................			269
17.1		VPN Overview ...............................................................................................................	269
	17.1.1 IPSec ......................................................................................................................		269
	17.1.2 Security Association ...............................................................................................		269
	17.1.3 Other Terminology ..................................................................................................		269
	17.1.4 VPN Applications ...................................................................................................		270
17.2		IPSec Architecture ...........................................................................................................	270
	17.2.1 IPSec Algorithms ....................................................................................................		271
	17.2.2 Key Management ...................................................................................................		271
17.3		Encapsulation ..................................................................................................................	271
	17.3.1 Transport Mode ......................................................................................................		272
	17.3.2 Tunnel Mode .........................................................................................................		272
17.4		IPSec and NAT ................................................................................................................	272
Chapter 18
VPN Screens..........................................................................................................................			275
18.1		VPN/IPSec Overview .......................................................................................................	275
18.2		IPSec Algorithms .............................................................................................................	275
	18.2.1 AH (Authentication Header) Protocol .....................................................................		275
	18.2.2 ESP (Encapsulating Security Payload) Protocol ....................................................		275
18.3		My IP Address .................................................................................................................	276
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			P-2602HWLNI User’s Guide