Asus SL6000 User manual

VPN ADSL Router
SL6000/SL6300
®
User’s Manual

2ASUS VPN ADSL Router
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Copyright Information
Product Name: ASUS VPN ADSL Router (SL6000/SL6300)
Manual Revision: 1 E1428
Release Date: October 2003

ASUS VPN ADSL Router 3
Copyright Information
ASUSTeK COMPUTER INC. (Asia-Pacific)
Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
General Tel: [phone]
General Fax: [phone]
Web Site: www.asus.com.tw
Technical Support
Networking (Tel): [phone] (English)
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Support Fax: [phone]
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Address: 44370 Nobel Drive, Fremont, CA 94538, USA
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4ASUS VPN ADSL Router
Table of Contents
1. Introduction ............................................................................. 9
1.1 Features .................................................................................... 9
1.2 System Requirements ............................................................... 9
1.3 Using this Document................................................................ 10
1.4 Getting Support ............................................................................. 10
2. Getting to Know SL6000/SL6300 ......................................... 11
2.1 Parts List ....................................................................................... 11
2.2 Front Panel ................................................................................... 11
2.3 Rear Panel .................................................................................... 12
3. Quick Start Guide.................................................................. 13
3.1 Connecting the Hardware .............................................................. 13
3.1.1 Connect theADSL line .......................................................... 13
3.1.2 Connect the computers or a LAN .......................................... 14
3.1.3Attach the power adapter ...................................................... 14
3.1.4 Turn on the SL6000/SL6300 and your computers ................. 14
3.2 Configuring Your Computers.......................................................... 15
3.2.1 Before you begin................................................................... 15
3.2.2 Windows® XP PCs: .............................................................. 15
3.2.3 Windows® 2000 PCs:........................................................... 16
3.2.4 Windows® Me PCs............................................................... 17
3.2.5 Windows® 95, 98 PCs: ......................................................... 18
3.2.6 Windows® NT 4.0 workstations: ........................................... 19
3.2.7Assigning static Internet information to your PCs................... 20
3.3 Quick Configuration of SL6000/SL6300 ......................................... 20
3.3.1 Buttons Used in Setup Wizard .............................................. 21
3.3.2 Setting Up the SL6000/SL6300............................................. 21
3.3.3 Testing Your Setup ................................................................ 31
3.3.4 Default Router Settings ......................................................... 31
4. Starting the Configuration Manager.................................... 31
4.1 Log into Configuration Manager..................................................... 31
4.2 Functional Layout .......................................................................... 32
4.2.1 Setup Menu Navigation Tips ................................................. 32
4.2.2 Commonly Used Buttons and Icons ...................................... 32
4.3 The Home Page of Configuration Manager.................................... 34

ASUS VPN ADSL Router 5
Table of Contents
5. System Information .............................................................. 35
6. Configuring LAN Settings .................................................... 36
6.1 LAN IPAddress ............................................................................. 36
6.1.1 LAN IP Configuration Parameters ......................................... 36
6.1.2 Configuring the LAN IPAddress............................................ 36
6.2 DHCP (Dynamic Host Configuration Protocol) ............................... 38
6.2.1 What is DHCP? .................................................................... 38
6.2.2 Why use DHCP? .................................................................. 39
6.2.3 Configuring DHCP Server ..................................................... 39
6.2.4 Viewing Current DHCPAddress Assignments ....................... 40
6.3 DNS .............................................................................................. 40
6.3.1 About DNS............................................................................ 40
6.3.2 Assigning DNS Addresses .................................................... 42
6.3.3 Configuring DNS Relay......................................................... 42
6.4 Viewing LAN Statistics................................................................... 43
7. Configuring WAN/ADSL Settings ........................................ 44
7.1 ADSL Connection .......................................................................... 44
7.2 WAN Configuration........................................................................ 45
7.2.1 MPoA Bridged and PPPoE Relay:......................................... 45
7.2.2 MPoA Routed: ...................................................................... 45
7.2.3 IPoA Routed: ........................................................................ 45
7.2.4 PPPoA Routed and PPPoE Routed: ..................................... 46
7.3 Viewing WAN/ADSL Statistics ....................................................... 47
8. Configuring Routes .............................................................. 48
8.1 Overview of IP Routes................................................................... 48
8.1.1 Do I need to define IP routes?............................................... 48
8.2 DNS Relay Configuration .............................................................. 49
8.3 Static Routing................................................................................ 49
8.3.1 Static Route Configuration Parameters ................................. 49
8.3.2 Adding Static Routes............................................................. 50
8.3.3 Modifying Static Routes ........................................................ 50
8.3.4 Deleting Static Routes .......................................................... 51
8.3.5 Viewing the Static Routing Table ........................................... 51

6ASUS VPN ADSL Router
9. Configuring Firewall/NAT Settings ...................................... 52
9.1 DoS Protection and Stateful Packet Inspection .............................. 52
9.2 Default ACL Rules ......................................................................... 53
9.3 Configuring Inbound ACL Rules..................................................... 53
9.3.2Add Inbound ACL Rules ........................................................ 60
9.3.3 Modify InboundACL Rules.................................................... 61
9.3.4 Delete InboundACL Rules .................................................... 61
9.3.5 Display InboundACL Rules .................................................. 61
9.4 Configuring OutboundACL Rules .................................................. 62
9.4.2Add an OutboundACL Rule .................................................. 68
9.4.3 Modify OutboundACL Rules ................................................. 69
9.4.4 Delete OutboundACL Rules ................................................. 69
9.4.5 Display OutboundACL Rules................................................ 69
9.5 Configuring GroupACL Rules........................................................ 70
9.5.1Add/Delete a User Group...................................................... 70
9.6 Configuring Self Access Rules....................................................... 72
9.6.1Add a SelfAccess Rule ......................................................... 72
9.6.2 View SelfAccess Summary .................................................. 72
9.6.3 Delete SelfAccess Rule........................................................ 72
9.7 Configuring Service List................................................................. 73
9.7.1 Options in Service Configuration Page.................................. 74
9.7.2Add a Service ....................................................................... 74
9.7.3 Modify a Service ................................................................... 74
9.7.4 Delete a Service ................................................................... 75
9.7.5 View Configured Services ..................................................... 75
9.8 DoS (Denial of Service) ................................................................. 76
9.8.1 SYN FloodingAttack Check .................................................. 76
9.8.2 WinnukeAttack Check .......................................................... 76
9.8.3 MIME FloodAttack Check..................................................... 76
9.8.4 Maximum IP Fragment Count ............................................... 77
Table of Contents

ASUS VPN ADSL Router 7
9.9 Policy List ...................................................................................... 78
9.9.1 Application Filter ................................................................... 78
9.9.2 NAT Pool .............................................................................. 81
9.9.3 IP Pool.................................................................................. 82
9.9.4 Firewall User......................................................................... 84
9.9.5 Time Range .......................................................................... 86
9.10 Firewall Statistics......................................................................... 88
10.2 Establish VPN Connection UsingAutomatic Keying..................... 91
10.2.1 VPN Tunnel Configuration Parameters forAutomatic Keying91
10.2.2 Add a Rule for VPN Connection Using Preshared Key ........ 95
10.2.3 Modify VPN Rules............................................................... 96
10.2.4 Delete VPN Rules............................................................... 97
10.2.5 Display VPN Rules ............................................................. 97
10.3 Establish VPN Connection Using Manual Keys ........................... 97
10.3.1 VPN Tunnel Configuration Parameters - Manual Key .......... 99
10.3.2 Add a Rule for VPN Connection Using Manual Key........... 101
10.3.3 Modify VPN Rules............................................................. 102
10.3.4 Delete VPN Rules............................................................. 103
10.3.5 Display VPN Rules ........................................................... 103
10.4 VPN Statistics ........................................................................... 103
11.System Log.......................................................................... 106
12.System Management .......................................................... 107
12.1 Global Setting Configuration ...................................................... 107
12.2 UserAccount Management ....................................................... 109
12.3 Modify System Information ........................................................ 109
12.4 Setup Time Zone ....................................................................... 109
12.4.1 Change/View the System Time Zone ................................ 110
12.5 System Configuration Management............................................111
12.5.1 Reset System Configuration to Default...............................111
12.5.2 Backup System Configuration ............................................111
12.5.3 Restore System Configuration .......................................... 112
12.6 Upgrade Firmware......................................................................113
Table of Contents

8ASUS VPN ADSL Router
13.System Reset ...................................................................... 114
14.Logout Configuration Manager ......................................... 115
A. IP Addresses, Network Masks, & Subnets ....................... 116
A.1 IPAddresses................................................................................116
A.1.1 Structure of an IP address .................................................. 116
A.1.2 Network classes ..................................................................117
A.2 Subnet masks ..............................................................................118
B. Troubleshooting.................................................................. 119
B.1 Recall default configuration by “RESET” button.......................... 122
B.2 Diagnosing Problem using IP Utilities .......................................... 125
B.2.1 ping .................................................................................... 125
B.2.2 nslookup............................................................................. 126
C. Glossary............................................................................... 127
Table of Contents

ASUS VPN ADSL Router 9
Chapter 1
Chapter 1
1. Introduction
Congratulations on becoming the owner of the SL6000/SL6300 VPN ADSL
Router. Your LAN (local area network) will now be able to access the Internet
via SL6000/SL6300’s ADSL connection.
This User Manual will show you how to set up the SL6000/SL6300 VPN
ADSL Router, and how to customize its configuration to get the most out of
this product.
1.1 Features
• Built-inADSLmodem in SL6000 (G.992.1AnnexA) / SL6300 (G.992.1
Annex B), which offers up to 8Mbps/800Kbps internet surf speed for
Downstream/Upstream, respectively.
• 10/100Base-T Ethernet router to provide Internet connectivity to all
computers on your LAN
• NAT (Network Address Translation), Firewall, and IPSec VPN func-
tions to provide secure Internet access for your LAN
• Automatic network address assignment through DHCP Server
• Services including IProute and DNS configuration, RIP, and IP perfor-
mance monitoring
• Configuration program accessible via a web browser, such as Microsoft
Internet Explorer. Note that Netscape is not supported.
1.2 System Requirements
In order to use the SL6000/SL6300 VPN ADSL Router for Internet access,
you must have the following:
• ADSL service subscription from your ISP.
• One or more computers each containing an Ethernet 10Base-T/100Base-
T network interface card (NIC).
• (Optional)An Ethernet hub/switch, if you are connecting the device to
more than four computers on an Ethernet network.
• For system configuration using the supplied web-based program: a web
browser such as Internet Explorer v5.5 or later

10 ASUS VPN ADSL Router
Chapter 1
Chapter 1
1.3 Using this Document
1.3.1 Notational conventions
• Acronyms are defined the first time they appear in text and in the glos-
sary (Appendix C).
• For brevity, the SL6000/SL6300 is referred to as “the router.”
• The terms LAN and network are used interchangeably to refer to a group
of Ethernet-connected computers at one site.
1.3.2 Typographical conventions
• Italics are used to identify terms that are defined in the glossary (Ap-
pendix C).
• Boldface type text is used for items you select from menus and drop-
down lists, and text strings you type when prompted by the program.
1.3.3 Special messages
This document uses the following icons to call your attention to specific
instructions or explanations.
Notes: Provides clarification or nonessential information on the
current topic.
Definition: Explains terms or acronyms that may be unfamiliar to
many readers. These terms are also included in the Glossary.
WARNING: Provides messages of high importance, including mes-
sages relating to personal safety or system integrity.
1.4 Getting Support
See the contact information on first few pages of this manual.

ASUS VPN ADSL Router 11
Chapter 2
Chapter 2
POWER STATUS TRAFFIC LAN1
1 2 3 4 6
VPN ADSL ROUTER
R
LAN2 LAN3 LAN4
5 7
2. Getting to Know SL6000/SL6300
2.1 Parts List
In addition to this document, your SL6000/SL6300 should come with the
following:
• SL6000/SL6300 VPN ADSL Router
• Power adapter
• Ethernet cable (RJ-45) “straight-through” type)
• Phone cable (RJ-11)
2.2 Front Panel
The front panel contains LED indicators that show the status of the unit.
Figure 2.2 Front Panel LEDs
Table 2.1 Front Panel Label and LEDs
Label Color Function
POWER green On: Unit is powered on
Off: Unit is powered off
STATUS green On: ADSL link is established and active
Flashing: Trying to create an ADSL connection
Off: No ADSL link
TRAFFIC green Flashing: ADSL data transfer
LAN1-4 green On: LAN link is established
Flashing: Data transfer at LAN connection(s)
Off: No LAN link

12 ASUS VPN ADSL Router
Chapter 2
Chapter 2
12 3 4 6
57
P1P2
P3P4 CONSOLE Reset POWER
8 9
LINE
2.3 Rear Panel
The rear panel contains the ports for the unit’s data and power connections.
Figure 2.3 Rear Panel Connections
Table 2.2 Rear Panel Labels and Switch/Connectors
1. LINE
Connects to your ADSL line. This is a standard RJ-11 telephone jack on
your wall but routed through an ADSL system by your phone company and
may have an optional splitter to allow telephone use on the same line.
2. P1 - P4
Connects to your PC’s Ethernet port, or to the uplink port on your LAN’s hub/
switch, using the provided RJ-45 crossover cable.
3. Console
RJ-45 port for advanced console management. An additional RS232 to
RJ45 cable is required.
4. Reset
Resets the device.
5. Power
Connects to the supplied power adapter.
6. On/Off
Power switch to turn the unit ON and OFF.

ASUS VPN ADSL Router 13
Chapter 3
Chapter 3
3. Quick Start Guide
ThisQuick Start Guideprovides basicinstructions forconnecting the SL6000/
SL6300 to a computer or a LAN and to the Internet viaADSL.
• Part 1 provides instructions to set up the hardware.
• Part 2 describes how to configure Internet properties on your
computer(s).
• Part 3 shows you how to configure basic settings on the SL6000/SL6300
to get your LAN connected to the Internet.
After setting up and configuring the device, you can follow the instructions to
verify that it is working properly.
ThisQuickStart Guideassumesthatyou havealreadysubscribeADSLservice
with your Internet service provider (ISP). These instructions provide a basic
configurationthatshouldbecompatiblewithyourhomeorsmallofficenetwork
setup.Refertothesubsequentchaptersforadditionalconfigurationinstructions.
3.1 Connecting the Hardware
In 3.1, you should connect the device to an ADSL line, the power outlet, and
your computer or network.
WARNING: Before you begin, turn the power off for all devices.
These include your computer(s), your LAN hub/switch (if applicable),
and the SL6000/SL6300.
For hardware connections, please follow the steps that follow for specific
instructions.
3.1.1 Connect the ADSL line
For SL6000/SL6300: Connect your ADSL line to the port labeled ADSL on
the rear panel of the device. Connect the other end of the line to the wall phone
jack or to the POTS splitter (Optional).

14 ASUS VPN ADSL Router
Chapter 3
Chapter 3
3.1.2 Connect the computers or a LAN
If your LAN has no more than 4 computers, you can use Ethernet cable to
connect computers directly to the built-in switch on the device. Note that you
should attach one end of the Ethernet cable to any of the port labeled LAN1 -
LAN4 on the rear panel of the device and connect the other end to the Ethernet
port of a computer.
If you LAN has more than 4 computers, you can attach one end of a Ethernet
cable to a hub or a switch (probably an uplink port; please refer to the hub or
switch documentations for instructions) and the other to the Ethernet switch
port (labeled LAN1 - LAN4) on the SL6000/SL6300.
Note that both the crossover or straight-through Ethernet cable can be used to
connect the built-in switch and computers, hubs or switches as the built-in
switch is smart enough to make connections with either type of cables.
3.1.3 Attach the power adapter
Connect the AC power adapter to the POWER connector on the back of the
device and plug in the adapter to a wall outlet or a power strip.
3.1.4 Turn on the SL6000/SL6300 and your computers
Press the Power switch on the rear panel of SL6000/SL6300 to the ON position.
Turn on and boot up your computer(s) and any LAN devices such as hubs or
switches. You should verify that its LEDs are illuminated as shown in Table 3.1
Table 3.1 LED Indicators
This LED: ...should be:
POWER Solid green to indicate that the device is turned on. If this light
is not on, check if the power adapter is attached to SL6000/
SL6300 and if it is plugged into a power source.
LAN1 - LAN4 Solid green to indicate that the device can communicate with
your LAN or flashing when the device is sending or receiving
data from your LAN computer(s).
ADSL Solid green to indicate that the device has successfully
established a connection to your ADSL line.
If the LEDs illuminate as expected, SL6000/SL6300 hardware is working
properly.

ASUS VPN ADSL Router 15
Chapter 3
Chapter 3
3.2 Configuring Your Computers
3.2.1 Before you begin
By default, the SL6000/SL6300 automatically assigns all required Internet
settings to your PCs. You need only to configure the PCs to accept the
information when it is assigned.
Note: In some cases, you may want to assign Internet information
manually to some or all of your computers rather than allow the
SL6000/SL6300 to do so. See “Assigning static Internet informa-
tion to your PCs” for instructions.
If you have connected your PC of LAN via Ethernet to the SL6000 / SL6300,
follow the instructions that correspond to the operating system installed on
your PC.
3.2.2 Windows
®
XP PCs:
1. In the Windows task bar, click the Start button, and then click Control
Panel.
2. Double-click the Network Connections icon.
3. In the LAN or High-Speed Internet window, right-click on icon corre-
sponding to your network interface card (NIC) and select Properties.
(Often this icon is labeled Local Area Connection).
The LocalArea Connection dialog box displays with a list of currently
installed network items.
4. Ensure that the check box to the left of the item labeled Internet Proto-
col TCP/IP is checked, and click Properties.
5. In the Internet Protocol (TCP/IP) Properties dialog box, click the radio
button labeled Obtain an IP address automatically. Also click the radio
button labeled Obtain DNS server address automatically.
6. Click OKtwice to confirm your changes, and close the Control Panel.

16 ASUS VPN ADSL Router
Chapter 3
Chapter 3
3.2.3 Windows
®
2000 PCs:
First, check for the IP protocol and, if necessary, install it:
1. In the Windows task bar, click the Start button, point to Settings, and
then click Control Panel.
2. Double-click the Network and Dial-up Connections icon.
3. In the Network and Dial-up Connections window, right-click the Local
Area Connection icon, and then select Properties.
The LocalArea Connection Properties dialog box displays with a list of
currently installed network components. If the list includes Internet
Protocol (TCP/IP), then the protocol has already been enabled. Skip to
step 10.
4. If Internet Protocol (TCP/IP) does not display as an installed compo-
nent, click Install.
5. In the Select Network Component Type dialog box, select Protocol,
and then click Add.
6. Select Internet Protocol (TCP/IP) in the Network Protocols list, and
then click OK.
You may be prompted to install files from your Windows 2000 installa-
tion CD or other media. Follow the instructions to install the files.
7. If prompted, click OKto restart your computer with the new settings.
Next, configure the PCs to accept IP information assigned by the SL6000
/ SL6300:
8. In the Control Panel, double-click the Network and Dial-up Connec-
tions icon.
9. In Network and Dial-upConnections window, right-click the LocalArea
Connection icon, and then select Properties.
10.In the Local Area Connection Properties dialog box, select Internet
Protocol (TCP/IP), and then click Properties.
11. In the Internet Protocol (TCP/IP) Properties dialog box, click the radio
button labeled Obtain an IP address automatically. Also click the
radio button labeled Obtain DNS server address automatically.
12.Click OKtwice to confirm and save your changes, and then close the
Control Panel.

ASUS VPN ADSL Router 17
Chapter 3
Chapter 3
3.2.4 Windows
®
Me PCs
1. In the Windows task bar, click the Start button, point to Settings, and
then click Control Panel.
2. Double-click the Network and Dial-up Connections icon.
3. In the Network and Dial-up Connections window, right-click the Net-
work icon, and then select Properties.
The Network Properties dialog box displays with a list of currently
installednetwork components. Ifthe listincludes InternetProtocol (TCP/
IP), then the protocol has already been enabled. Skip to step 11.
4. If Internet Protocol (TCP/IP) does not display as an installed compo-
nent, click Add.
5. In the Select Network Component Type dialog box, select Protocol,
and then click Add.
6. Select Microsoft in the Manufacturers box.
7. Select Internet Protocol (TCP/IP) in the Network Protocols list, and
then click OK.
You may be prompted to install files from your Windows Me installa-
tion CD or other media. Follow the instructions to install the files.
8. If prompted, click OKto restart your computer with the new settings.
Next, configure the PCs to accept IP information assigned by the SL6000
/ SL6300:
9. In the Control Panel, double-click the Network and Dial-up Connec-
tions icon.
10.In Network and Dial-up Connections window, right-click the Network
icon, and then select Properties.
11. In the Network Properties dialog box, select TCP/IP, and then click
Properties.
12.In the TCP/IPSettings dialog box, click the radio button labeled Server
assigned IP address. Also click the radio button labeled Server as-
signed name server address.
13.Click OK twice to confirm and save your changes, and then close the
Control Panel.

18 ASUS VPN ADSL Router
Chapter 3
Chapter 3
3.2.5 Windows
®
95, 98 PCs:
First, check for the IP protocol and, if necessary, install it:
1. In the Windows task bar, click the Start button, point to Settings, and
then click Control Panel.
2. Double-click the Network icon.
The Network dialog box displays with a list of currently installed net-
work components. If the list includes TCP/IP, and then the protocol has
already been enabled. Skip to step 9.
3. If TCP/IP does not display as an installed component, click Add.
The Select Network Component Type dialog box displays.
4. Select Protocol, and then click Add.
The Select Network Protocol dialog box displays.
5. Click on Microsoft in the Manufacturers list box, and then click TCP/
IP in the Network Protocols list box.
6. Click [OK] to return to the Network dialog box, and then click [OK]
again.
You may be prompted to install files from your Windows 95/98 instal-
lation CD. Follow the instructions to install the files.
7. Click [OK] to restart the PC and complete the TCP/IP installation.
Next, configure the PCs to accept IP information assigned by the SL6000
/ SL6300:
8. Open the Control Panel window, and then click the Network icon.
9. Select the network component labeled TCP/IP, and then click [Proper-
ties].
If you have multiple TCP/IP listings, select the listing associated with
your network card or adapter.
10.In the TCP/IP Properties dialog box, click the IPAddress tab.
11. Click the radio button labeled Obtain an IP address automatically.
12.Click the DNS Configuration tab, and then click the radio button la-
beled Obtain an IP address automatically.
13.Click [OK] twice to confirm and save your changes.
You will be prompted to restart Windows.
14.Click [Yes].

ASUS VPN ADSL Router 19
Chapter 3
Chapter 3
3.2.6 Windows
®
NT 4.0 workstations:
First, check for the IP protocol and, if necessary, install it:
1. In the Windows NT task bar, click the Start button, point to Settings,
and then click Control Panel.
2. In the Control Panel window, double click the Network icon.
3. In the Network dialog box, click the Protocols tab.
The Protocols tab displays a list of currently installed network proto-
cols. If the list includes TCP/IP, then the protocol has already been en-
abled. Skip to step 9.
4. If TCP/IP does not display as an installed component, click [Add].
5. In the Select Network Protocol dialog box, selectTCP/IP, and then click
[OK].
You may be prompted to install files from your Windows NT installa-
tion CD or other media. Follow the instructions to install the files.
After all files are installed, a window displays to inform you that a
TCP/IP service called DHCP can be set up to dynamically assign IP
information.
6. Click [Yes] to continue, and then click [OK] if prompted to restart your
computer. Next, configure the PCs to accept IP information assigned
by the SL6000 / SL6300:
7. Open the Control Panel window, and then double-click the Network
icon.
8. In the Network dialog box, click the Protocols tab.
9. In the Protocols tab, select TCP/IP, and then click [Properties].
10.In the Microsoft TCP/IP Properties dialog box, click the radio button
labeled Obtain an IPaddress from a DHCP server.
11. Click [OK] twice to confirm and save your changes, and then close the
Control Panel.