ZyXEL Communications 10, 50 Chapter 13 Creating Custom Rules

ZYWALL 10/50 Internet Security Gateway

10.5.4	UDP/ICMP Security .......................................................................................................	10-10
10.5.5	Upper Layer Protocols ....................................................................................................	10-11
10.6	Guidelines For Enhancing Security With Your Firewall ....................................................	10-11
10.6.1	Security In General .........................................................................................................	10-12
10.7	Packet Filtering Vs Firewall................................................................................................	10-12
10.7.1	Packet Filtering: ..............................................................................................................	10-13
10.7.2	Firewall ...........................................................................................................................	10-13
Chapter 11 Introducing the ZyWALL Firewall....................................................................................		11-1
11.1	Remote Management and the Firewall..................................................................................	11-1
11.2	Access Methods ....................................................................................................................	11-1
11.3	Using ZyWALL SMT Menus ...............................................................................................	11-1
11.3.1	Activating the Firewall......................................................................................................	11-1
11.3.2 Viewing the Firewall Log .................................................................................................		11-2
Chapter 12 Using the ZyWALL Web Configurator.............................................................................		12-1
12.1	Web Configurator Login and Main Menu Screens ...............................................................	12-1
12.2	Enabling the Firewall ............................................................................................................	12-2
12.3	E-mail....................................................................................................................................	12-2
12.3.1	Alerts.................................................................................................................................	12-2
12.3.2	Logs...................................................................................................................................	12-3
12.3.3	SMTP Error Messages ......................................................................................................	12-5
12.3.4	Example E-mail Log .........................................................................................................	12-5
12.4	Attack Alert...........................................................................................................................	12-6
12.4.1	Threshold Values ..............................................................................................................	12-6
12.4.2	Half-Open Sessions...........................................................................................................	12-7
Chapter 13 Creating Custom Rules ......................................................................................................		13-1
13.1	Rules Overview.....................................................................................................................	13-1
13.2	Rule Logic Overview ............................................................................................................	13-1

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