Asus Internet Security Router User Manual Page 156
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Appendix 15. Troubleshooting Internet Security Router User’s Manual
140
Problem Troubleshooting Suggestion
addresses within a predefined pool
PCs cannot display
web pages on the
Internet.
Verify that the DNS server specified on the PCs is correct for
your ISP, as discussed in the item above. You can use the ping
utility, discussed in the following section, to test connectivity with
your ISP’s DNS server.
Configuration Manager Program
You forgot/lost your
Configuration
Manager user ID or
password.
If you have not changed the password from the default, try using
“admin” as both the user ID and password. Otherwise, you can
reset the device to the default configuration by following the
instructions provided in section 12.5.1 “Reset System
Configuration”. WARNING: Resetting the device removes any
custom settings and returns all settings to their default values.
Cannot access the
Configuration
Manager program
from your browser.
Use the ping utility, discussed in the following section, to check
whether your PC can communicate with the Internet Security
Router’s LAN IP address (by default 192.168.1.1). If it cannot,
check the Ethernet cabling.
Verify that you are using Internet Explorer v5.5, Netscape 7.0.2
or later. Support for Javascript® must be enabled in your
browser. Support for Java® may also be required.
Verify that the PC’s IP address is defined as being on the same
subnet as the IP address assigned to the LAN port on the
Internet Security Router.
Changes to
Configuration
Manager are not
being retained.
Be sure to click on button to save any changes.
15.1 Diagnosing Problem using IP Utilities
15.1.1 ping
Ping is a command you can use to check whether your PC can recognize other computers on your network
and the Internet. A ping command sends a message to the computer you specify. If the computer receives the
message, it sends messages in reply. To use it, you must know the IP address of the computer with which you
are trying to communicate.
On Windows-based computers, you can execute a ping command from the Start menu. Click the Start button,
and then click Run. In the Open text box, type a statement such as the following:
ping 192.168.1.1
Click . You can substitute any private IP address on your LAN or a public IP address for an Internet
site, if known.
If the target computer receives the message, a Command Prompt window displays like that shown in Figure
15.1.
- Internet Security 1
- Table of Contents 3
- List of Figures 11
- List of Tables 14
- 1 Introduction 17
- 2.1 Parts List 19
- 2.2 Front Panel 19
- 2.3 Rear Panel 19
- 2.4 Major Features 20
- 2.4.1.6 URL Filtering 22
- 2.4.1.7 Log and Alerts 22
- 2.4.2 VPN 23
- 3 Quick Start Guide 25
- 3.2.1 Before you begin 27
- 3.2.2 Windows[CT6]® XP PCs: 27
- 3.2.3 Windows® 2000 PCs: 27
- 3.3.3 Testing Your Setup 36
- Manager[CT9] 37
- 4.2 Functional Layout 38
- 5 Configuring LAN Settings 41
- 5.2.1 What is DHCP? 42
- 5.2.2 Why use DHCP? 43
- just go to the 44
- 5.3 DNS 45
- 5.4 Viewing LAN Statistics 46
- 6 Configuring WAN Settings 47
- 6.3 Dynamic IP 48
- 6.4 Static IP 50
- 6.5 Viewing WAN Statistics 51
- 7 Configuring Routes 53
- 7.3 Static Routing 54
- 8 Configuring DDNS 57
- 9.1 Firewall Overview 61
- 9.2 NAT Overview 62
- 9.2.2 Dynamic NAT 63
- Translation) 64
- 9.2.4 Reverse Static NAT 65
- 9.3.3 Add Inbound ACL Rules 68
- 9.5 Configuring URL Filters 74
- 9.5.3 Add an URL Filter Rule 75
- Access) 77
- 9.6.2.3 Add a Service 79
- 9.6.2.4 Modify a Service 80
- 9.6.2.5 Delete a Service 80
- Application Filter) 84
- 9.7.2 Configuring IP Pool 89
- 9.7.2.3 Add an IP Pool 90
- 9.7.2.4 Modify an IP Pool 90
- 9.7.2.5 Delete an IP Pool 91
- 9.7.2.6 IP Pool Example 91
- 9.7.3 Configuring NAT Pool 92
- 9.7.3.3 Add a NAT Pool 94
- 9.7.3.4 Modify a NAT Pool 94
- 9.7.3.5 Delete a NAT Pool 94
- 9.7.3.6 NAT Pool Example 94
- 9.7.4 Configuring Time Range 96
- 9.7.4.3 Add a Time Range 97
- 9.7.4.4 Modify a Time Range 97
- 9.7.4.5 Delete a Time Range 98
- 9.7.4.7 Time Range Example 98
- 10 Configuring VPN 101
- 10.3.2 Modify VPN Rules 108
- 10.3.3 Delete VPN Rules 108
- 10.3.4 Display VPN Rules 108
- 10.4.2 Modify VPN Rules 110
- 10.4.3 Delete VPN Rules 110
- 10.4.4 Display VPN Rules 110
- 10.5 VPN Statistics 111
- 10.6 VPN Connection Examples 112
- Configuring Remote Access 125
- Example 128
- 12 System Management 139
- 12.4 Setup Date and Time 141
- 12.6 Upgrade Firmware 144
- 13 ALG Configuration 147
- 14.1 IP Addresses 151
- 14.2 Network classes 151
- 14.3 Subnet masks 152
- Class C: 255.255.255.0 153
- 15 Troubleshooting 155
- 15.1.1 ping 156
- 15.1.2 nslookup 157
- 16 Glossary 159
- 17 Index 165
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