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ZyXEL Communications ZyWALL 10/10 User Manual (342 pages)

Internet Security Gateway

Brand: ZyXEL Communications | Category: Gateway | Size: 3 MB

Information for Canadian Users
4
Declaration of Conformity
5
Zyxel Limited Warranty
6
Customer Support
7
- Warranty Information
  7
- Table of Contents
  8
List of Figures
20
List of Diagrams
31
Preface
33
Syntax Conventions
34
Getting Started
35
Chapter 1 Getting to Know Your Zywall

37
Chapter 2 Hardware Installation

43
- Front Panel Leds and Back Panel Ports
  43
Chapter 3 Initial Setup

49
Chapter 4 General and WAN Setup

59
- System Name
  59
- Dynamic DNS
  59
  - DYNDNS Wildcard
    60
- General Setup
  60
- Figure 4-1 Menu 1 - General Setup
  60
- Table 4-1 General Setup Menu Field
  60
- Figure 4-2 Configure Dynamic DNS
  61
- Table 4-2 Configure Dynamic DNS Menu Fields
  61
- Configuring Dynamic Dns
  61
- WAN Setup
  63
- Figure 4-3 Menu 2 - WAN Setup
  63
- Table 4-3 WAN Setup Menu Fields
  63
Chapter 5 LAN Setup

65
Chapter 6 Internet Access

73
- Internet Access Setup
  73
- Advanced Applications
  79
Chapter 7 Remote Node Setup

81
- Remote Node Profile
  81
Chapter 8 IP Static Route Setup

93
Chapter 9 Network Address Translation (NAT)

97
Chapter 10 Firewalls

123
- What Is a Firewall
  123
- Types of Firewalls
  123
  - Packet Filtering Firewalls
    123
  - Application-Level Firewalls
    123
  - Stateful Inspection Firewalls
    124
- Introduction to Zyxel's Firewall
  124
- Denial of Service
  125
  - Basics
    125
  - Figure 10-1 Zywall Firewall Application
    125
  - Types of Dos Attacks
    126
  - Table 10-1 Common IP Ports
    126
  - Figure 10-2 Three-Way Handshake
    127
  - Figure 10-3 SYN Flood
    127
  - Figure 10-4 Smurf Attack
    128
  - Table 10-2 ICMP Commands that Trigger Alerts
    128
- Stateful Inspection
  129
  - Table 10-3 Legal Netbios Commands
    129
  - Table 10-4 Legal SMTP Commands
    129
  - Figure 10-5 Stateful Inspection
    130
  - Stateful Inspection Process
    130
  - Stateful Inspection and the Zywall
    131
  - TCP Security
    132
    
    UDP/ICMP Security
    132
    
    Upper Layer Protocols
    133
  - Guidelines for Enhancing Security with Your Firewall
    133
    
    Security in General
    134
  - Packet Filtering Vs Firewall
    134
    
    Packet Filtering
    135
    
    Firewall
    135
Chapter 11 Introducing the Zywall Firewall

137
- Remote Management and the Firewall
  137
- Access Methods
  137
- Using Zywall SMT Menus
  137
  - Activating the Firewall
    137
  - Figure 11-1 Menu 21 - Filter and Firewall Setup
    137
  - Viewing the Firewall Log
    138
  - Figure 11-2 Menu 21.2 - Firewall Setup
    138
  - Figure 11-3 Example Firewall Log
    138
  - Table 11-1 View Firewall Log
    139
Chapter 12 Using the Zywall Web Configurator

141
- Web Configurator Login and Main Menu Screens
  141
- Enabling the Firewall
  142
- E-Mail
  142
  - Alerts
    142
  - Figure 12-1 Enabling the Firewall
    142
  - Logs
    143
  - Figure 12-2 E-Mail Screen
    143
  - Table 12-1 E-Mail
    144
  - SMTP Error Messages
    145
  - Example E-Mail Log
    145
  - Table 12-2 SMTP Error Messages
    145
  - Attack Alert
    146
    
    Threshold Values
    146
    
    Figure 12-3 E-Mail Log
    146
    
    Half-Open Sessions
    147
    
    Figure 12-4 Attack Alert
    148
    
    Table 12-3 Attack Alert
    148
Chapter 13 Creating Custom Rules

151
- Rules Overview
  151
- Rule Logic Overview
  151
- Rule Checklist
  151
- Security Ramifications
  152
- Key Fields for Configuring Rules
  152
- Connection Direction
  153
  - LAN to WAN Rules
    153
  - Figure 13-1 LAN to WAN Traffic
    153
  - WAN to LAN Rules
    154
- Rule Summary
  154
- Figure 13-2 WAN to LAN Traffic
  154
- Figure 13-3 Firewall Rules Summary - First Screen
  155
- Table 13-1 Firewall Rules Summary - First Screen
  155
- Predefined Services
  157
- Timeout
  163
Chapter 14 Custom Ports

167
- Introduction
  167
- Figure 14-1 Custom Ports
  167
- Table 14-1 Custom Ports
  168
- Creating/Editing a Custom Port
  169
- Figure 14-2 Creating/Editing a Custom Port
  169
- Table 14-2 Creating/Editing a Custom Port
  170
Chapter 15 Logs

171
- Log Screen
  171
- Figure 15-1 Log Screen
  171
- Table 15-1 Log Screen
  172
Chapter 16 Example Firewall Rules

173
- Examples
  173
- Advanced Management
  185
Chapter 18 Filter Configuration

187
- About Filtering
  187
  - The Filter Structure of the Zywall
    188
  - Figure 18-1 Outgoing Packet Filtering Process
    188
  - Figure 18-2 Filter Rule Process
    189
  - Configuring a Filter Set
    190
    
    Filter Rules Summary Menu
    192
    
    Table 18-1 Abbreviations Used in the Filter Rules Summary Menu
    192
    
    Table 18-2 Rule Abbreviations Used
    192
    
    Configuring a Filter Rule
    193
    
    TCP/IP Filter Rule
    193
    
    Table 18-3 TCP/IP Filter Rule Menu Fields
    194
    
    Filter Configuration
    197
    
    Generic Filter Rule
    198
    
    Table 18-4 Generic Filter Rule Menu Fields
    199
  - Example Filter
    200
  - Filter Types and NAT
    203
  - Firewall
    203
  - Applying a Filter and Factory Defaults
    204
    
    LAN Traffic
    204
    
    Remote Node Filters
    204
Chapter 19 SNMP Configuration

207
- About SNMP
  207
- Figure 19-1 SNMP Management Model
  208
- Supported Mibs
  209
- Configuring SNMP
  209
- Table 19-1 General SNMP Commands
  209
- Figure 19-2 Menu 22 - SNMP Configuration
  210
- Table 19-2 SNMP Configuration Menu Fields
  210
- SNMP Traps
  211
- Table 19-3 SNMP Traps
  211
Chapter 20 System Information & Diagnosis

213
Chapter 21 Firmware and Configuration Maintenance

227
Chapter 22 System Maintenance & Information

245
- Command Interpreter Mode
  245
- Call Control Support
  246
  - Figure 22-2 Valid Commands
    246
  - Figure 22-3 Call Control
    246
  - Budget Management
    247
  - Figure 22-4 Budget Management
    247
  - Table 22-1 Budget Management
    247
  - Call History
    248
  - Figure 22-5 Call History
    248
  - Table 22-2 Call History Fields
    248
  - Time and Date Setting
    248
    
    Figure 22-6 Menu 24 - System Maintenance
    249
    
    Figure 22-7 Menu 24.10 System Maintenance - Time and Date Setting
    249
    
    Resetting the Time
    250
    
    Table 22-3 Time and Date Setting Fields
    250
Chapter 23 Remote Management

253
- Telnet
  253
- Ftp
  253
- Figure 23-1 Telnet Configuration on a TCP/IP Network
  253
- Web
  254
- Remote Management
  254
- Call Scheduling and Vpn/Ipsec
  259
Chapter 24 Call Scheduling

261
Chapter 25 Introduction to Ipsec

265
- Introduction
  265
  - Vpn
    265
  - Ipsec
    265
  - Security Association
    265
  - Other Terminology
    265
  - VPN Applications
    266
  - Figure 25-1 Encryption and Decryption
    266
- Ipsec Architecture
  267
  - Figure 25-2 VPN Application
    267
  - Figure 25-3 Ipsec Architecture
    268
  - Ipsec Algorithms
    268
  - Key Management
    268
- Encapsulation
  269
  - Transport Mode
    269
  - Tunnel Mode
    269
- Ipsec and NAT
  269
- Figure 25-4 Transport and Tunnel Mode Ipsec Encapsulation
  269
- Table 25-1 VPN and NAT
  270
Chapter 26 Vpn/Ipsec Setup

271
- Vpn/Ipsec Setup
  271
- Figure 26-1 VPN SMT Menu Tree
  271
- Ipsec Algorithms
  272
- Ipsec Summary
  273
- Ipsec Setup
  279
- Table 26-4 Menu 27.1.1 — Ipsec Setup
  281
- IKE Setup
  282
  - IKE Phases
    282
    
    Negotiation Mode
    283
    
    Figure 26-8 Two Phases to Set up the Ipsec SA
    283
    
    Pre-Shared Key
    284
    
    Diffie-Hellman (DH) Key Groups
    284
    
    Perfect Forward Secrecy (PFS)
    284
    
    Figure 26-9 Menu
    285
    
    Table 26-5 Menu
    285
  - Manual Setup
    287
    
    Active Protocol
    287
    
    Security Parameter Index (SPI)
    287
    
    Table 26-6 Active Protocol - Encapsulation and Security Protocol
    287
    
    Figure 26-10 Menu 27.1.1.2 - Manual Setup
    288
    
    Table 26-7 Menu 27.1.1.2 - Manual Setup
    288
Chapter 27 SA Monitor

291
- Introduction
  291
- Using SA Monitor
  291
- Figure 27-1 Menu 27.2 - SA Monitor
  291
- Table 27-1 Menu 27.2 - SA Monitor
  292
Chapter 28 Ipsec Log

295
Chapter 29 Troubleshooting

303
Appendix A the Big Picture

307
Appendix B Pppoe

309
- Pppoe in Action
  309
- Benefits of Pppoe
  309
- How Pppoe Works
  310
Appendix C PPTP

311
Appendix D Hardware Specifications

315
Appendix E Important Safety Instructions

317
Appendix F Boot Commands

319
Appendix G Command Interpreter

321
Appendix H Firewall Commands

323
Appendix I Netbios Filter Commands

329
Appendix J Netbios Filter Commands

329
- Index
  335
Chapter 17 Content Filtering

335
- Categories
  335

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ZyXEL Communications ZyWALL 10/10 Manuals

ZyXEL Communications ZyWALL 10/10 User Manual (342 pages)

Table of Contents

Chapter 1 Getting to Know Your Zywall

Chapter 2 Hardware Installation

Chapter 3 Initial Setup

Chapter 4 General and WAN Setup

Chapter 5 LAN Setup

Chapter 6 Internet Access

Chapter 7 Remote Node Setup

Chapter 8 IP Static Route Setup

Chapter 9 Network Address Translation (NAT)

Chapter 10 Firewalls

Chapter 11 Introducing the Zywall Firewall

Chapter 12 Using the Zywall Web Configurator

Chapter 13 Creating Custom Rules

Chapter 14 Custom Ports

Chapter 15 Logs

Chapter 16 Example Firewall Rules

Chapter 18 Filter Configuration

Chapter 19 SNMP Configuration

Chapter 20 System Information & Diagnosis

Chapter 21 Firmware and Configuration Maintenance

Chapter 22 System Maintenance & Information

Chapter 23 Remote Management

Chapter 24 Call Scheduling

Chapter 25 Introduction to Ipsec

Chapter 26 Vpn/Ipsec Setup

Chapter 27 SA Monitor

Chapter 28 Ipsec Log

Chapter 29 Troubleshooting

Appendix A the Big Picture

Appendix B Pppoe

Appendix C PPTP

Appendix D Hardware Specifications

Appendix E Important Safety Instructions

Appendix F Boot Commands

Appendix G Command Interpreter

Appendix H Firewall Commands

Appendix I Netbios Filter Commands

Appendix J Netbios Filter Commands

Chapter 17 Content Filtering

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