Table of Contents
P-660HW-Dx v2 User’s Guide
14
7.6 WMM QoS
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122
7.6.1 WMM QoS Example
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122
7.6.2 WMM QoS Priorities
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122
7.6.3 Services
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123
7.7 QoS Screen
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124
7.7.1 ToS (Type of Service) and WMM QoS
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125
7.7.2 Application Priority Configuration
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126
Chapter
8
Network Address Translation (NAT) Screens
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129
8.1 NAT Overview
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129
8.1.1 NAT Definitions
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129
8.1.2 What NAT Does
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130
8.1.3 How NAT Works
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130
8.1.4 NAT Application
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130
8.1.5 NAT Mapping Types
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131
8.2 SUA (Single User Account) Versus NAT
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132
8.3 SIP ALG
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132
8.4 NAT General Setup
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133
8.5 Port Forwarding
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133
8.5.1 Default Server IP Address
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134
8.5.2 Port Forwarding: Services and Port Numbers
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134
8.5.3 Configuring Servers Behind Port Forwarding (Example)
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135
8.6 Configuring Port Forwarding
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135
8.6.1 Port Forwarding Rule Edit
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136
8.7 Address Mapping
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137
8.7.1 Address Mapping Rule Edit
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139
Part IV: Security
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141
Chapter
9
Firewalls
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143
9.1 Firewall Overview
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143
9.2 Types of Firewalls
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143
9.2.1 Packet Filtering Firewalls
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143
9.2.2 Application-level Firewalls
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144
9.2.3 Stateful Inspection Firewalls
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144
9.3 Introduction to ZyXEL’s Firewall
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144
9.3.1 Denial of Service Attacks
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145
9.4 Denial of Service
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145
9.4.1 Basics
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145