Manuali utente per ZyXEL Prestige 202H Plus ISDN Router

Sommario

• P-202H Plus v2

  1
• Copyright

  3
• Certifications

  4
• Safety Warnings

  5
• ZyXEL Limited Warranty

  6
• Customer Support

  7
• Table of Contents

  9
• List of Figures

  21
• List of Tables

  27
• Preface

  31
• 1. Getting To Know Your ZyXEL Device

  33
  • 1.1 Introducing the ZyXEL Device

    33
  • 1.2 Features

    33
  • 1.3 Applications for the ZyXEL Device

    37
    • 1.3.1 Internet Access

      37
    • 1.3.2 LAN-to-LAN Connection

      37
    • 1.3.3 Remote Access Server

      38
    • 1.3.4 Secure Broadband Internet Access and VPN

      38
  • 1.4 Front Panel LEDs

    39
  • 1.5 Hardware Connection

    40
• 2. Introducing the Web Configurator

  41
  • 2.1 Web Configurator Overview

    41
  • 2.2 Accessing the Web Configurator

    41
  • 2.3 Resetting the ZyXEL Device

    42
    • 2.3.1 Using the Reset Button

      42
  • 2.4 Navigating the Web Configurator

    43
    • 2.4.1 Changing Login Password

      44
• 3. Wizard Setup

  47
  • 3.1 Introduction

    47
    • 3.1.1 MSN (Multiple Subscriber Number) and Subaddress

      47
    • 3.1.2 PABX Outside Line Prefix

      47
  • 3.2 Wizard Setup

    47
    • 3.2.1 Test Your Internet Connection

      54
• 4. LAN Setup

  55
  • 4.1 LAN Overview

    55
    • 4.1.1 LANs, WANs and the ZyXEL Device

      55
    • 4.1.2 DHCP Setup

      55
      • 4.1.2.1 IP Pool Setup

        56
    • 4.1.3 DNS Server Address Assignment

      56
  • 4.2 LAN TCP/IP

    56
    • 4.2.1 IP Address and Subnet Mask

      56
      • 4.2.1.1 Private IP Addresses

        57
  • 4.3 Configuring LAN Setup

    57
• 5. WAN Setup

  61
  • 5.1 WAN Overview

    61
    • 5.1.1 PPP Multilink

      61
    • 5.1.2 Bandwidth on Demand

      61
    • 5.1.3 IP Address Assignment

      61
  • 5.2 Internet Access Setup

    61
• 6. Network Address Translation (NAT) Screens

  65
  • 6.1 NAT Overview

    65
    • 6.1.1 NAT Definitions

      65
    • 6.1.2 What NAT Does

      66
    • 6.1.3 How NAT Works

      66
    • 6.1.4 NAT Application

      67
    • 6.1.5 NAT Mapping Types

      67
  • 6.2 SUA (Single User Account) Versus NAT

    68
  • 6.3 Selecting the NAT Mode

    68
  • 6.4 SUA Server

    69
    • 6.4.1 Default Server IP Address

      70
    • 6.4.2 Port Forwarding: Services and Port Numbers

      70
    • 6.4.3 Configuring Servers Behind NAT (Example)

      70
  • 6.5 Configuring SUA Server

    71
  • 6.6 Configuring Address Mapping

    72
    • 6.6.1 Address Mapping Rule Edit

      73
• 7. Dynamic DNS

  75
  • 7.1 Dynamic DNS Overview

    75
    • 7.1.1 DYNDNS Wildcard

      75
  • 7.2 Configuring Dynamic DNS

    75
• 8. Firewalls

  77
  • 8.1 Firewall Overview

    77
  • 8.2 Types of Firewalls

    77
    • 8.2.1 Packet Filtering Firewalls

      77
    • 8.2.2 Application-level Firewalls

      77
    • 8.2.3 Stateful Inspection Firewalls

      78
  • 8.3 Introduction to ZyXEL’s Firewall

    78
    • 8.3.1 Denial of Service Attacks

      79
  • 8.4 Denial of Service

    79
    • 8.4.1 Basics

      79
    • 8.4.2 Types of DoS Attacks

      80
      • 8.4.2.1 ICMP Vulnerability

        82
      • 8.4.2.2 Illegal Commands (NetBIOS and SMTP)

        82
      • 8.4.2.3 Traceroute

        83
  • 8.5 Stateful Inspection

    83
    • 8.5.1 Stateful Inspection Process

      84
    • 8.5.2 Stateful Inspection and the ZyXEL Device

      84
    • 8.5.3 TCP Security

      85
    • 8.5.4 UDP/ICMP Security

      85
    • 8.5.5 Upper Layer Protocols

      86
  • 8.6 Guidelines for Enhancing Security with Your Firewall

    86
    • 8.6.1 Security In General

      86
  • 8.7 Packet Filtering Vs Firewall

    87
    • 8.7.1 Packet Filtering:

      87
      • 8.7.1.1 When To Use Filtering

        88
    • 8.7.2 Firewall

      88
      • 8.7.2.1 When To Use The Firewall

        88
• 9. Firewall Configuration

  89
  • 9.1 Enabling the Firewall

    89
  • 9.2 E-Mail

    89
  • 9.3 Attack Alert

    91
    • 9.3.1 Alerts

      91
    • 9.3.2 Threshold Values

      91
    • 9.3.3 Half-Open Sessions

      92
      • 9.3.3.1 TCP Maximum Incomplete and Blocking Time

        92
    • 9.3.4 Configuring Firewall Alert

      92
  • 9.4 Rules Overview

    94
  • 9.5 Rule Logic Overview

    94
    • 9.5.1 Rule Checklist

      95
    • 9.5.2 Security Ramifications

      95
    • 9.5.3 Key Fields For Configuring Rules

      95
      • 9.5.3.1 Action

        95
      • 9.5.3.2 Service

        95
      • 9.5.3.3 Source Address

        96
      • 9.5.3.4 Destination Address

        96
  • 9.6 Connection Direction

    96
    • 9.6.1 LAN to WAN Rules

      96
    • 9.6.2 WAN to LAN Rules

      96
  • 9.7 Firewall Rules Summary

    96
    • 9.7.1 Configuring Firewall Rules

      98
    • 9.7.2 Source and Destination Addresses

      100
    • 9.7.3 Customized Services

      101
    • 9.7.4 Configuring A Customized Service

      102
  • 9.8 Timeout

    102
    • 9.8.1 Factors Influencing Choices for Timeout Values

      103
  • 9.9 Logs Screen

    104
  • 9.10 Example Firewall Rule

    105
  • 9.11 Predefined Services

    108
• 10. Introduction to IPSec

  111
  • 10.1 VPN Overview

    111
    • 10.1.1 IPSec

      111
    • 10.1.2 Security

      111
    • 10.1.3 Other Terminology

      111
      • 10.1.3.1 Encryption

        111
      • 10.1.3.2 Data Confidentiality

        112
      • 10.1.3.3 Data Integrity

        112
      • 10.1.3.4 Data Origin Authentication

        112
    • 10.1.4 VPN Applications

      112
  • 10.2 IPSec Architecture

    112
    • 10.2.1 IPSec Algorithms

      113
    • 10.2.2 Key Management

      113
  • 10.3 Encapsulation

    113
    • 10.3.1 Transport Mode

      114
    • 10.3.2 Tunnel Mode

      114
  • 10.4 IPSec and NAT

    114
• 11. VPN Screens

  117
  • 11.1 VPN/IPSec Overview

    117
  • 11.2 IPSec Algorithms

    117
    • 11.2.1 AH (Authentication Header) Protocol

      117
    • 11.2.2 ESP (Encapsulating Security Payload) Protocol

      117
  • 11.3 My IP Address

    118
  • 11.4 Secure Gateway IP Address

    118
    • 11.4.1 Dynamic Secure Gateway Address

      119
  • 11.5 VPN Summary Screen

    119
  • 11.6 Keep Alive

    121
  • 11.7 ID Type and Content

    121
    • 11.7.1 ID Type and Content Examples

      122
  • 11.8 Pre-Shared Key

    123
  • 11.9 VPN Rules

    123
  • 11.10 IKE Phases

    127
    • 11.10.1 Negotiation Mode

      128
    • 11.10.2 Diffie-Hellman (DH) Key Groups

      129
    • 11.10.3 Perfect Forward Secrecy (PFS)

      129
  • 11.11 Advanced IKE Settings

    129
  • 11.12 Manual Key

    132
    • 11.12.1 Security Parameter Index (SPI)

      132
  • 11.13 Manual Key Screen

    133
  • 11.14 SA Monitor Screen

    135
  • 11.15 Global Setting Screen

    136
  • 11.16 Telecommuter VPN/IPSec Examples

    137
    • 11.16.1 Telecommuters Sharing One VPN Rule Example

      137
    • 11.16.2 Telecommuters Using Unique VPN Rules Example

      138
  • 11.17 Logs

    139
• 12. NetCAPI

  141
  • 12.1 NetCAPI Overview

    141
  • 12.2 CAPI

    141
    • 12.2.1 ISDN-DCP

      141
  • 12.3 Configuring NetCAPI

    142
    • 12.3.1 Configuring the ZyXEL Device as a NetCAPI Server

      143
    • 12.3.2 RVS-COM

      143
    • 12.3.3 Example of Installing a CAPI driver and Communication Software

      144
• 13. Supplementary Phone Services

  145
  • 13.1 Overview

    145
  • 13.2 Setting Up Supplemental Phone Service

    146
  • 13.3 The Flash Key

    146
  • 13.4 Call Waiting

    146
    • 13.4.1 How to Use Call Waiting

      146
      • 13.4.1.1 Placing the Current Call on Hold

        146
      • 13.4.1.2 Dropping the Current Call to Switch to an Incoming/Holding Call

        146
  • 13.5 Three Way Calling

    147
    • 13.5.1 How to Use Three-Way Calling

      147
      • 13.5.1.1 To drop the last call added to the three-way call:

        147
      • 13.5.1.2 To drop yourself from the conference call:

        147
  • 13.6 Call Transfer

    147
    • 13.6.1 How to Use Call Transfer

      147
    • 13.6.2 To Do a Blind Transfer:

      148
  • 13.7 Call Forwarding

    148
  • 13.8 Reminder Ring

    148
  • 13.9 Multiple Subscriber Number (MSN)

    149
  • 13.10 Using MSN

    149
  • 13.11 Terminal Portability (Suspend/Resume)

    149
    • 13.11.1 How to Suspend/Resume a Phone Call:

      149
      • 13.11.1.1 To suspend an active phone call

        149
      • 13.11.1.2 To resume your phone call

        149
• 14. Maintenance

  151
  • 14.1 Maintenance Overview

    151
  • 14.2 System Status

    151
    • 14.2.1 System Statistics

      153
  • 14.3 DHCP Table Screen

    154
  • 14.4 Firmware Screen

    155
  • 14.5 Budget Control

    158
• 15. Introducing the SMT

  159
  • 15.1 SMT Introduction

    159
  • 15.2 Accessing the ZyXEL Device via Console Port

    159
    • 15.2.1 Initial Screen

      159
    • 15.2.2 Entering Password

      159
  • 15.3 Procedure for SMT Configuration via Telnet

    160
  • 15.4 SMT Menu Overview

    160
  • 15.5 Navigating the SMT Interface

    162
    • 15.5.1 System Management Terminal Interface Summary

      163
  • 15.6 Changing the System Password

    164
• 16. Menu 1 General Setup

  167
  • 16.1 General Setup

    167
  • 16.2 Procedure To Configure Menu 1

    167
    • 16.2.1 Procedure to Configure Dynamic DNS

      168
• 17. Menu 2 ISDN Setup

  171
  • 17.1 ISDN Setup Overview

    171
    • 17.1.1 Supplementary Voice Services

      171
    • 17.1.2 ISDN Call Waiting

      171
    • 17.1.3 PABX Outside Line Prefix

      171
    • 17.1.4 Outgoing Calling Party Number

      172
  • 17.2 ISDN Setup

    172
    • 17.2.1 ISDN Advanced Setup

      174
    • 17.2.2 Configuring Advanced Setup

      175
  • 17.3 NetCAPI

    176
    • 17.3.1 Configuring NetCAPI

      176
• 18. Menu 3 Ethernet Setup

  179
  • 18.1 Ethernet Setup

    179
    • 18.1.1 General Ethernet Setup

      179
  • 18.2 Ethernet TCP/IP and DHCP Server

    180
  • 18.3 Configuring TCP/IP Ethernet Setup and DHCP

    180
    • 18.3.1 IP Alias Setup

      181
• 19. Internet Access Setup

  185
  • 19.1 Introduction to Internet Access Setup

    185
  • 19.2 Internet Access Setup

    185
• 20. Remote Node Configuration

  187
  • 20.1 Introduction to Remote Node Setup

    187
    • 20.1.1 Minimum Toll Period

      187
  • 20.2 Remote Node Profile Setup

    187
  • 20.3 Outgoing Authentication Protocol

    190
  • 20.4 PPP Multilink

    191
  • 20.5 Bandwidth on Demand

    191
  • 20.6 Editing PPP Options

    192
  • 20.7 LAN-to-LAN Application

    193
  • 20.8 Configuring Network Layer Options

    194
  • 20.9 Remote Node Filter

    196
• 21. Static Route Setup

  199
  • 21.1 Static Route

    199
  • 21.2 IP Static Route Setup

    199
• 22. Dial-in Setup

  203
  • 22.1 Dial-in Users Overview

    203
  • 22.2 Default Dial-in User Setup

    203
    • 22.2.1 CLID Callback Support For Dial-In Users

      203
  • 22.3 Setting Up Default Dial-in

    204
    • 22.3.1 Default Dial-in Filter

      206
  • 22.4 Callback Overview

    206
  • 22.5 Dial-In User Setup

    207
  • 22.6 Telecommuting Application With Windows Example

    208
  • 22.7 LAN-to-LAN Server Application Example

    210
    • 22.7.1 Configuring Callback in LAN-to-LAN Application

      210
    • 22.7.2 Configuring With CLID in LAN-to-LAN Application

      212
• 23. Network Address Translation (NAT)

  215
  • 23.1 Using NAT

    215
    • 23.1.1 SUA (Single User Account) Versus NAT

      215
  • 23.2 Applying NAT

    215
  • 23.3 NAT Setup

    217
    • 23.3.1 Address Mapping Sets

      217
      • 23.3.1.1 User-Defined Address Mapping Sets

        219
      • 23.3.1.2 Ordering Your Rules

        220
  • 23.4 Configuring a Server behind NAT

    221
  • 23.5 General NAT Examples

    223
    • 23.5.1 Example 1: Internet Access Only

      223
    • 23.5.2 Example 2: Internet Access with an Inside Server

      224
    • 23.5.3 Example 3: Multiple Public IP Addresses With Inside Servers

      224
    • 23.5.4 Example 4: NAT Unfriendly Application Programs

      228
• 24. Enabling the Firewall

  231
  • 24.1 Remote Management and the Firewall

    231
  • 24.2 Access Methods

    231
  • 24.3 Enabling the Firewall

    231
    • 24.3.1 Viewing the Firewall Log

      232
    • 24.3.2 Example E-mail Log

      234
• 25. Filter Configuration

  235
  • 25.1 Introduction to Filters

    235
    • 25.1.1 The Filter Structure of the ZyXEL Device

      236
  • 25.2 Configuring a Filter Set

    237
    • 25.2.1 Filter Rules Summary Menus

      240
    • 25.2.2 Configuring a Filter Rule

      241
    • 25.2.3 Configuring a TCP/IP Filter Rule

      241
    • 25.2.4 Configuring a Generic Filter Rule

      244
  • 25.3 Example Filter

    246
  • 25.4 Filter Types and NAT

    248
  • 25.5 Firewall Versus Filters

    249
  • 25.6 Applying a Filter

    249
    • 25.6.1 Applying LAN Filters

      249
    • 25.6.2 Applying Remote Node Filters

      250
• 26. SNMP Configuration

  251
  • 26.1 About SNMP

    251
  • 26.2 Supported MIBs

    252
  • 26.3 SNMP Configuration

    252
  • 26.4 SNMP Traps

    253
• 27. System Security

  255
  • 27.1 System Security

    255
  • 27.2 System Password

    255
  • 27.3 RADIUS

    255
  • 27.4 Configuring External Server

    256
• 28. System Information and Diagnosis

  259
  • 28.1 System Status

    259
  • 28.2 System Information and Console Port Speed

    261
    • 28.2.1 System Information

      261
    • 28.2.2 Console Port Speed

      262
  • 28.3 Log and Trace

    263
    • 28.3.1 Viewing Error Log

      263
    • 28.3.2 Unix Syslog

      264
      • 28.3.2.1 CDR

        265
      • 28.3.2.2 Packet triggered

        266
      • 28.3.2.3 Filter log

        266
      • 28.3.2.4 PPP log

        267
      • 28.3.2.5 POTS log

        267
    • 28.3.3 Accounting Server

      267
    • 28.3.4 Call-Triggering Packet

      268
  • 28.4 Diagnostic

    269
• 29. Firmware and Configuration File Maintenance

  271
  • 29.1 Filename Conventions

    271
  • 29.2 Backup Configuration

    272
    • 29.2.1 Backup Configuration

      272
    • 29.2.2 Using the FTP Command from the Command Line

      273
    • 29.2.3 Example of FTP Commands from the Command Line

      273
    • 29.2.4 GUI-based FTP Clients

      274
    • 29.2.5 Remote Management Limitations

      274
    • 29.2.6 Backup Configuration Using TFTP

      274
    • 29.2.7 TFTP Command Example

      275
    • 29.2.8 GUI-based TFTP Clients

      275
    • 29.2.9 Backup Via Console Port

      276
  • 29.3 Restore Configuration

    277
    • 29.3.1 Restore Using FTP

      277
    • 29.3.2 Restore Using FTP Session Example

      278
    • 29.3.3 Restore Via Console Port

      278
  • 29.4 Uploading Firmware and Configuration Files

    279
    • 29.4.1 Firmware File Upload

      279
    • 29.4.2 Configuration File Upload

      280
    • 29.4.3 FTP File Upload Command from the DOS Prompt Example

      281
    • 29.4.4 FTP Session Example of Firmware File Upload

      281
    • 29.4.5 TFTP File Upload

      281
    • 29.4.6 TFTP Upload Command Example

      282
    • 29.4.7 Uploading Via Console Port

      282
    • 29.4.8 Uploading Firmware File Via Console Port

      282
    • 29.4.9 Example Xmodem Firmware Upload Using HyperTerminal

      283
    • 29.4.10 Uploading Configuration File Via Console Port

      283
    • 29.4.11 Example Xmodem Configuration Upload Using HyperTerminal

      284
• 30. System Maintenance

  285
  • 30.1 Command Interpreter Mode

    285
    • 30.1.1 Command Syntax

      285
    • 30.1.2 Command Usage

      286
  • 30.2 Call Control Support

    286
    • 30.2.1 Call Control Parameters

      287
    • 30.2.2 Black List

      287
    • 30.2.3 Budget Management

      288
    • 30.2.4 Call History

      289
  • 30.3 Time and Date Setting

    290
    • 30.3.1 Resetting the Time

      291
• 31. Remote Management

  293
  • 31.1 Remote Management

    293
    • 31.1.1 Remote Management Limitations

      294
  • 31.2 Remote Management and NAT

    294
  • 31.3 System Timeout

    295
• 32. Call Scheduling

  297
  • 32.1 Introduction to Call Scheduling

    297
• 33. VPN/IPSec Setup

  301
  • 33.1 VPN/IPSec Overview

    301
  • 33.2 IPSec Summary Screen

    302
  • 33.3 IPSec Setup

    304
  • 33.4 IKE Setup

    307
  • 33.5 Manual Setup

    309
    • 33.5.1 Active Protocol

      309
• 34. SA Monitor

  313
  • 34.1 SA Monitor Overview

    313
  • 34.2 Using SA Monitor

    313
• 35. IPSec Log

  315
  • 35.1 IPSec Logs

    315
• 36. Troubleshooting

  319
  • 36.1 Problems Starting Up the ZyXEL Device

    319
  • 36.2 Problems with the LAN

    319
  • 36.3 Problems with the ISDN Line

    320
  • 36.4 Problems with Remote User Dial-in

    320
  • 36.5 Problems Accessing the ZyXEL Device

    321
• A. Product Specifications

  323
• B. Wall-mounting Instructions

  325
• C. Log Descriptions

  327
• D. Setting up Your Computer’s IP Address

  339
  • 36.5.1 Verifying Settings

    354
• E. IP Addresses and Subnetting

  355
• F. Pop-up Windows, JavaScripts and Java Permissions

  363
• Index

  371
  • A

    371
  • B

    371
  • C

    371
  • D

    371
  • E

    372
  • F

    372
  • G

    372
  • H

    372
  • I

    372
  • K

    373
  • L

    373
  • M

    373
  • N

    373
  • O

    373
  • P

    373
  • Q

    374
  • R

    374
  • S

    374
  • T

    375
  • U

    375
  • V

    375
  • W

    375
  • X

    375
  • Z

    375