ZyXEL Communications P-335U User Manual page 14

P-334U/P-335U User's Guide
Chapter 9
Network Address Translation (NAT) ................................................................... 115
9.1 NAT Overview
9.2 Using NAT ........................................................................................................115
9.3 General NAT Screen ........................................................................................116
9.4 NAT Application Screen
9.5 Trigger Port Forwarding ..................................................................................120
9.6 NAT Advanced Screen .....................................................................................121
Chapter 10
Dynamic DNS........................................................................................................ 125
10.1 Dynamic DNS Introduction ............................................................................125
10.2 Dynamic DNS Screen ..................................................................................125
Chapter 11
Firewall.................................................................................................................. 127
11.1 Introduction to Firewall
11.2 General Firewall Screen
11.3 Services Screen ............................................................................................129
Chapter 12
Content Filtering ................................................................................................. 133
12.1 Introduction to Content Filtering .....................................................................133
12.2 Restrict Web Features ...................................................................................133
12.3 Days and Times .............................................................................................133
12.4 Filter Screen ...................................................................................................133
12.5 Schedule ........................................................................................................135
12.6 Customizing Keyword Blocking URL Checking ..............................................136
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...............................................................................................115
9.2.1 Port Forwarding: Services and Port Numbers ........................................115
9.2.2 Configuring Servers Behind Port Forwarding (Example) ........................116
9.4.1 Game List Example ................................................................................119
9.5.1 Trigger Port Forwarding Example ..........................................................121
9.5.2 Two Points To Remember About Trigger Ports .......................................121
10.1.1 DynDNS Wildcard ................................................................................125
11.1.1 What is a Firewall? ................................................................................127
11.1.2 Stateful Inspection Firewall. ..................................................................127
11.1.3 About the ZyXEL Device Firewall .........................................................127
11.1.4 Guidelines For Enhancing Security With Your Firewall .........................128
12.6.1 Domain Name or IP Address URL Checking ........................................136
12.6.2 Full Path URL Checking .......................................................................136
12.6.3 File Name URL Checking .....................................................................137
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Table of Contents