Asus RX3042H Manuale utente

RX3042H

User's Manual

Revision 0.8

May 12, 2005

Table of Contents

1 Introduction ............................................................1

1.1 Features ....................................................................1

1.2 System Requirements ...............................................1

1.3 Using this Document .................................................2

1.3.1 Notational conventions ............................................... 2

1.3.2 Typographical conventions ......................................... 2

1.3.3 Special messages ...................................................... 2

2 Getting to Know RX3042H ....................................3

2.1 Parts List ...................................................................3

2.2 Hardware Features ....................................................3

2.3 Software Features .....................................................3

2.3.1 NAT Features ............................................................. 3

2.3.2 Firewall Features ........................................................ 4

2.3.2.1 Stateful Packet Inspection .................................. 4

2.3.2.2 Packet Filtering – ACL (Access Control List) ...... 4

2.3.2.3 Defense against DoS Attacks ............................. 5

2.3.2.4 Application Level Gateway (ALG) ....................... 6

2.3.2.5 Log ...................................................................... 6

2.4 Finding Your Way Around ..........................................7

2.4.1 Front Panel ................................................................. 7

2.4.2 Rear Panel ................................................................. 8

2.4.3 Bottom View ............................................................... 9

2.5 Placement Options ....................................................9

2.5.1 Desktop Placement .................................................... 9

2.5.2 Wall Mount Instructions: ............................................. 9

3 Quick Start Guide ................................................ 11

3.1 Part 1 — Connecting the Hardware ........................11

3.1.1 Step 1. Connect an ADSL or a cable modem ............11

3.1.2 Step 2. Connect computers or a Network ................ 12

3.1.3 Step 3. Attach the AC adapter .................................. 12

3.1.4 Step 4. Power on RX3042H, the ADSL or cable

modem and power up your computers .................... 12

3.2 Part 2 — Conﬁguring Your Computers ....................13

3.2.1 Before you begin ...................................................... 13

3.2.2 Windows® XP PCs: .................................................. 13

3.2.3 Windows® 2000 PCs: ............................................. 14

3.2.4 Windows® 95, 98, and ME PCs ............................... 15

3.2.5 Windows® NT 4.0 workstations: .............................. 16

3.2.6 Assigning static IP addresses to your PCs ............... 17

3.3 Part 3 — Quick Conﬁguration of the RX3042H .......19

3.3.1 Setting Up the RX3042H .......................................... 19

3.3.2 Testing Your Setup ................................................... 21

3.3.3 Default Router Settings ............................................ 21

4 Using the Conﬁguration Manager ......................23

4.1 Log into the Conﬁguration Manager ........................23

4.2 Functional Layout ....................................................24

4.2.1 Menu Navigation ...................................................... 25

4.2.2 Commonly Used Buttons and Icons ......................... 25

4.3 Overview of System Conﬁguration ..........................26

5 Router Setup ........................................................27

5.1 LAN Conﬁguration ...................................................27

5.1.1 LAN IP Address ........................................................ 27

5.1.2 LAN Conﬁguration Parameters ................................ 27

5.1.3 Conﬁguring the LAN IP Address ............................... 28

5.2 WAN/DMZ Conﬁguration .........................................29

iii

5.2.1 WAN Connection Mode ............................................ 29

5.2.2 PPPoE ...................................................................... 30

5.2.2.1 WAN PPPoE Conﬁguration Parameters ........... 31

5.2.2.2 Conﬁguring PPPoE for WAN ............................ 32

5.2.3 PPPoE Unnumbered ................................................ 33

5.2.3.1 WAN PPPoE Unnumbered Conﬁguration

Parameters ....................................................... 34

5.2.3.2 Conﬁguring PPPoE Unnumbered for WAN ...... 35

5.2.4 Dynamic IP ............................................................... 36

5.2.4.1 Conﬁguring Dynamic IP for WAN ...................... 36

5.2.5 Static IP .................................................................... 37

5.2.5.1 WAN or DMZ Static IP Conﬁguration Parameters 37

5.2.5.2 Conﬁguring Static IP for WAN or DMZ .............. 38

5.2.6 PPTP ........................................................................ 39

5.2.6.1 WAN PPTP Conﬁguration Parameters ............. 39

5.2.6.2 Conﬁguring PPTP for WAN ............................... 41

5.3 WAN Load Balancing and Line Back Up ..................41

5.3.1 WAN Load Balancing and Line Back Up Conﬁguration

Parameters .............................................................. 42

5.3.2 Setting Up WAN Load Balancing ............................ 43

5.3.3 Setting Up WAN Line Back Up ................................. 44

6 DHCP Server Conﬁguration ................................45

6.1 DHCP (Dynamic Host Control Protocol) ..................45

6.1.1 What is DHCP? ........................................................ 45

6.1.2 Why use DHCP? ...................................................... 45

6.1.3 Conﬁguring DHCP Server ........................................ 46

6.1.4 Viewing Current DHCP Address Assignments ......... 48

6.1.5 Fixed DHCP Lease ................................................... 48

6.1.5.1 Access Fixed DHCP Conﬁguration Page –

(Advanced ->DHCP Server) ............................. 48

6.1.5.2 Add a Fixed DHCP Lease ................................. 49

6.1.5.3 Delete a Fixed DHCP Lease ............................. 49

6.1.5.4 Viewing Fixed DHCP Lease Table .................... 49

6.2 DNS .........................................................................50

6.2.1 About DNS .............................................................. 50

6.2.2 Assigning DNS Addresses ....................................... 50

6.2.3 Conﬁguring DNS Relay ............................................ 51

7 Routing .................................................................53

7.1 Overview of IP Routes .............................................53

7.1.1 Do I need to deﬁne static routes? ............................ 53

7.2 Dynamic Routing using RIP (Routing Information

Protocol) ..................................................................54

7.2.1 RIP Conﬁguration Parameters ................................. 54

7.2.2 Conﬁguring RIP ........................................................ 55

7.3 Static Route .............................................................56

7.3.1 Static Route Conﬁguration Parameters .................... 56

7.3.2 Adding Static Routes ................................................ 57

7.3.3 Deleting Static Routes .............................................. 58

7.3.4 Viewing the Static Routing Table .............................. 58

8 Conﬁguring DDNS ...............................................59

8.1 DDNS Conﬁguration Parameters ............................60

8.2 Conﬁguring HTTP DDNS Client ..............................60

9 Conﬁguring Firewall and NAT ............................63

9.1 Firewall Overview ....................................................63

9.1.1 Stateful Packet Inspection ........................................ 63

9.1.2 DoS (Denial of Service) Protection .......................... 64

9.1.3 Firewall and Access Control List (ACL) .................... 64

9.1.3.1 Priority Order of ACL Rule ................................ 64

9.1.3.2 Tracking Connection State ................................ 64

9.1.4 Default ACL Rules .................................................... 64

9.2 NAT Overview ..........................................................65

9.2.1 NAPT (Network Address and Port Translation) or PAT

(Port Address Translation) ......................................... 65

9.2.2 Reverse NAPT / Virtual Server ................................. 67

9.3 Firewall Settings – (Firewall/NAT ->Settings) ..........67

9.3.1 Firewall Options ....................................................... 67

9.3.2 DoS Conﬁguration .................................................... 67

9.3.2.1 DoS Protection Conﬁguration Parameters ........ 68

9.3.2.2 Conﬁguring DoS Settings ................................. 70

9.4 ACL Rule Conﬁguration Parameters .......................70

9.4.1 ACL Rule Conﬁguration Parameters ........................ 70

9.5 Conﬁguring ACL Rules – (Firewall ->ACL) ..............74

9.5.1 Add an ACL Rule ...................................................... 75

9.5.2 Modify an ACL Rule .................................................. 76

9.5.3 Delete an ACL Rule .................................................. 77

9.5.4 Display ACL Rules .................................................... 77

9.6 Conﬁguring Self-Access ACL Rules –(Firewall/NAT

->Self-Access ACL) .................................................77

9.6.1 Add a Self-Access Rule ............................................ 78

9.6.2 Modify a Self-Access Rule ....................................... 79

9.6.3 Delete a Self-Access Rule ....................................... 79

9.6.4 View Conﬁgured Self-Access Rules ......................... 80

9.7 Conﬁgure Virtual Server ..........................................80

9.7.1 Virtual Server Conﬁguration Parameters .................. 80

9.7.2 Virtual Server Example 1 – Web Server ................... 83

9.7.3 Virtual Server Example 2 – FTP Server ................... 85

9.8 Conﬁgure Special Application ..................................85

9.8.1 Special Application Conﬁguration Parameters ......... 86

9.8.2 Special Application Example .................................... 87

10 System Management .........................................89

10.1 Conﬁgure System Services ...................................89

10.2 Login Password and System Settings ...................90

10.2.1 Changing Password ............................................... 90

10.2.2 Conﬁgure System Settings ..................................... 91

10.3 Viewing System Information ..................................91

10.4 Setup Date and Time .............................................92

10.4.1 View the System Date and Time ............................ 93

10.5 SNMP Setup ..........................................................94

10.5.1 SNMP Conﬁguration Parameters ........................... 94

10.5.2 Conﬁguring SNMP .................................................. 94

10.6 Log Setup ...............................................................95

10.6.1 Setting Up Remote Logging Using a Syslog Server .. 95

10.6.2 View the System Log .............................................. 96

10.7 System Conﬁguration Management ......................95

10.7.1 Restore System Conﬁguration to Factory Default

Settings .................................................................. 96

10.7.2 Backup System Conﬁguration ................................ 98

10.7.3 Restore System Conﬁguration ............................... 99

10.8 Firmware Upgrade ...............................................101

10.9 Restart System ....................................................103

10.10 Logout Conﬁguration Manager ...........................104

11 IP Addresses, Network Masks, and Subnets 105

11.1 IP Addresses ........................................................105

11.1.1 Structure of an IP address .................................... 105

11.2 Network classes ..................................................106

11.3 Subnet masks ......................................................107

vii

12 Troubleshooting ..............................................109

12.1 Diagnosing Problem using IP Utilities ................. 111

12.1.1 ping .......................................................................111

12.1.2 nslookup ................................................................112

13 Index ................................................................. 115

List of Figures

Figure 2.1 Front Panel LEDs .......................................................... 7

Figure 2.2 Rear Panel Connectors ................................................. 8

Figure 3.1 Overview of Hardware Connections ............................ 12

Figure 3.2 Login Screen ............................................................... 19

Figure 3.3 System Status Page .................................................... 20

Figure 4.1 Conﬁguration Manager Login Screen ......................... 24

Figure 4.2 Typical Conﬁguration Manager Page .......................... 25

Figure 4.3 System Status Page .................................................... 26

Figure 5.1 Network Setup Conﬁguration – LAN Conﬁguration ..... 28

Figure 5.2 Network Setup Conﬁguration Page – WAN Conﬁgura-

tion .............................................................................. 30

Figure 5.3 WAN – PPPoE Conﬁguration ...................................... 30

Figure 5.4 WAN – PPPoE Unnumbered Conﬁguration ................ 33

Figure 5.5 WAN – Dynamic IP (DHCP client) Conﬁguration ........ 36

Figure 5.6 WAN – Static IP Conﬁguration .................................... 37

Figure 5.7 WAN – PPTP Conﬁguration ........................................ 40

Figure 5.8 Load Balancing Conﬁguration ..................................... 43

Figure 6.1 DHCP Server Conﬁguration Page ............................... 46

Figure 6.2 DHCP Lease Table ...................................................... 48

Figure 6.3 Fixed DHCP Lease Conﬁguration Page ...................... 49

viii

Figure 7.1 RIP Conﬁguration Page .............................................. 54

Figure 7.2 Static Route Conﬁguration Page ................................ 56

Figure 7.3 Static Route Conﬁguration ......................................... 57

Figure 7.4 Sample Routing Table ................................................ 58

Figure 8.1 Network Diagram for HTTP DDNS .............................. 59

Figure 8.2 HTTP DDNS Conﬁguration Page ................................ 60

Figure 9.1 NAPT – Map Any Internal PCs to a Single Global IP

Address ....................................................................... 66

Figure 9.2 Reverse NAPT – Relayed Incoming Packets to the

Internal Host Base on the Protocol, Port Number or

IP Address ................................................................... 66

Figure 9.3 Firewall General Conﬁguration Page .......................... 70

Figure 9.4 ACL Conﬁguration Page .............................................. 75

Figure 9.5 ACL Conﬁguration Example ........................................ 76

Figure 9.6 Sample ACL List Table ................................................ 76

Figure 9.7 Self-Access ACL Conﬁguration Page .......................... 78

Figure 9.8 Self-Access ACL Conﬁguration Example .................... 79

Figure 9.9 Virtual Server Conﬁguration Page ............................... 80

Figure 9.10 Virtual Server Deployment Topology ......................... 83

Figure 9.11 Virtual Server Example 1 – Web Server .................... 84

Figure 9.12 Adding a New Service ............................................... 84

Figure 9.13 Virtual Server Example 2 – FTP Server .................... 85

Figure 9.14 Special Application Conﬁguration Page .................... 87

Figure 10.1 System Services Conﬁguration Page ........................ 89

Figure 10.2 System Administration Conﬁguration Page ............... 90

Figure 10.3 System Information Page .......................................... 92

Figure 10.4 Time Zone Conﬁguration Page ................................. 93

Figure 10.5 SNMP Conﬁguration Page ........................................ 95

Figure 10.6 Syslog Server Conﬁguration ..................................... 95

Figure 10.7 Sample Log ............................................................... 96

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