
ZyAIR Wireless Gateway Series User’s Guide
viii Table of Contents
7.11 Configuring RADIUS ..............................................................................................................7-14
WAN...............................................................................................................................................................III
Chapter 8 WAN Screens ..............................................................................................................................8-1
8.1 WAN Overview .........................................................................................................................8-1
8.2 Configuring WAN ISP...............................................................................................................8-1
8.2.1 Ethernet Encapsulation ......................................................................................................8-1
8.2.2 PPPoE Encapsulation.........................................................................................................8-3
8.2.3 PPTP Encapsulation...........................................................................................................8-5
8.3 TCP/IP Priority (Metric)............................................................................................................8-6
8.4 Configuring WAN IP.................................................................................................................8-7
8.5 Configuring WAN MAC .........................................................................................................8-10
SUA/NAT AND STATIC ROUTE ...............................................................................................................IV
Chapter 9 Single User Account (SUA) / Network Address Translation (NAT).......................................9-1
9.1 NAT Overview ..........................................................................................................................9-1
9.1.1 NAT Definitions ................................................................................................................9-1
9.1.2 What NAT Does ................................................................................................................9-2
9.1.3 How NAT Works...............................................................................................................9-2
9.1.4 NAT Application ...............................................................................................................9-3
9.1.5 NAT Mapping Types .........................................................................................................9-4
9.1.6 SUA (Single User Account) Versus NAT .........................................................................9-5
9.2 SUA Server................................................................................................................................9-5
9.2.1 Port Forwarding: Services and Port Numbers....................................................................9-6
9.2.2 Configuring Servers Behind SUA (Example)....................................................................9-7
9.3 Configuring SUA Server............................................................................................................9-7
9.4 Configuring Address Mapping...................................................................................................9-9
9.4.1 Configuring Address Mapping Rule ................................................................................9-11
Chapter 10 Static Route ............................................................................................................................ 10-1
10.1 Static Route Overview .............................................................................................................10-1
10.2 Configuring IP Static Route.....................................................................................................10-1
10.2.1 Configuring Route Entry..................................................................................................10-3
FIREWALL AND REMOTE MANAGEMENT ......................................................................................... V
Chapter 11 Introduction to Firewalls ....................................................................................................... 11-1
11.1 Firewall Overview ...................................................................................................................11-1
11.2 Types of Firewalls....................................................................................................................11-1
11.2.1 Packet Filtering Firewalls ................................................................................................11-1
11.2.2 Application-level Firewalls..............................................................................................11-1
11.2.3 Stateful Inspection Firewalls............................................................................................11-2
11.3 Introduction to ZyXEL’s Firewall ...........................................................................................11-2
11.4 Denial of Service .....................................................................................................................11-2
11.4.1 Basics...............................................................................................................................11-3
11.4.2 Types of DoS Attacks ......................................................................................................11-4
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