ZyXEL Communications G-2000 Plus Chapter, Chapter, Chapter, Content Filtering

	ZyAIR G-2000 Plus User’s Guide
14.5.4 UDP/ICMP Security ..............................................................................		187
14.5.5 Upper Layer Protocols ..........................................................................		188
14.6	Guidelines For Enhancing Security With Your Firewall ..................................	188
14.7	Packet Filtering Vs Firewall ............................................................................	188
14.7.1 Packet Filtering: ....................................................................................		189
	14.7.1.1 When To Use Filtering .................................................................	189
14.7.2 Firewall .................................................................................................		189
	14.7.2.1 When To Use The Firewall ..........................................................	189
Chapter 15
Firewall Screens...................................................................................................		192
15.1	Access Methods .............................................................................................	192
15.2	Firewall Policies Overview .............................................................................	192
15.3	Rule Logic Overview ......................................................................................	193
15.3.1 Rule Checklist .......................................................................................		193
15.3.2 Security Ramifications ..........................................................................		194
15.3.3 Key Fields For Configuring Rules .........................................................		194
	15.3.3.1 Action ..........................................................................................	194
	15.3.3.2 Service ........................................................................................	194
	15.3.3.3 Source Address ...........................................................................	194
	15.3.3.4 Destination Address ....................................................................	194
15.4	Connection Direction Examples .....................................................................	195
15.4.1 LAN to WAN Rules ...............................................................................		195
15.4.2 WAN to LAN Rules ...............................................................................		195
15.5	Alerts ..............................................................................................................	196
15.6	Configuring Firewall .......................................................................................	196
15.6.1 Rule Summary ......................................................................................		197
15.6.2 Configuring Firewall Rules ....................................................................		199
15.6.3 Configuring Custom Services ...............................................................		202
15.7	Example Firewall Rule ...................................................................................	203
15.8	Predefined Services .......................................................................................	206
Chapter 16
Content Filtering .................................................................................................		210
16.1	Introduction to Content Filtering .....................................................................	210
16.2	Restrict Web Features ...................................................................................	210
16.3	Days and Times .............................................................................................	210
16.4	Configure Content Filtering ............................................................................	210
Chapter 17
Certificates............................................................................................................		214
17.1	Certificates Overview .....................................................................................	214
17.1.1 Advantages of Certificates ....................................................................		215

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