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ZyWALL 50 Internet Security Gateway
Table Of Contents xiii
10.2.3 Key Fields For Configuring Rules....................................................................................10-2
10.3 Connection Direction............................................................................................................10-3
10.3.1 LAN to WAN Rules..........................................................................................................10-3
10.3.2 WAN to LAN Rules..........................................................................................................10-4
10.4 Rule Summary ......................................................................................................................10-4
10.5 Predefined Services...............................................................................................................10-7
10.5.1 Creating/Editing Firewall Rules......................................................................................10-10
10.5.2 Source and Destination Addresses..................................................................................10-11
10.6 Timeout...............................................................................................................................10-13
10.6.1 Factors Influencing Choices for Timeout Values ...........................................................10-13
Chapter 11 Custom Ports.......................................................................................................................11-1
11.1 Introduction...........................................................................................................................11-1
11.2 Creating/Editing A Custom Port...........................................................................................11-3
Chapter 12 Logs .....................................................................................................................................12-1
12.1 Log Screen............................................................................................................................12-1
Chapter 13 Example Firewall Rules.....................................................................................................13-1
13.1 Examples...............................................................................................................................13-1
13.1.1 Example 1: Firewall Rule To Allow Web Service From The Internet..............................13-1
13.1.2 Example 2: Small Office With Mail, FTP and Web Servers ............................................13-6
13.1.3 Example 3: DHCP Negotiation and Syslog Connection from the Internet.....................13-12
Chapter 14 Content Filtering ................................................................................................................14-1
14.1 Categories .............................................................................................................................14-1
14.1.1 Restrict Web Features.......................................................................................................14-1
14.1.2 Filter List ..........................................................................................................................14-1
14.1.3 Days and Times ................................................................................................................14-1
14.2 Update List............................................................................................................................14-1