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Chapter 6: Set Up and Configure the Router

System Management Tab - Dual-WAN

10/100 4-Port VPN Router

System Management Tab - Dual-WAN

Dual-WAN

There are two functions provided for users – Smart Link Backup and Load Balance. If you selected DMZ on the

setup page, you cannot do the Dual-WAN settings here.

If Smart Link Backup is selected, you only need to choose which WAN port is the primary and then the other will

be the backup. See Figure 6-22.

If Load Balance is selected, there will be two main choices: By Traffic – Intelligent Balancer (Auto) and user

defined. See Figure 6-23.

First, choose the Max. Bandwidth of Upstream (64K/128K/256K/384K/512K/1024K/1.5M/2M/2.5M or above) and

Downstream (512K/1024K/1.5M/2M/2.5M or above) for WAN1 and WAN2, as provided by your ISP.

Intelligent Balancer (Auto): When choosing Intelligent Balancer, it will automatically compute the maximum

bandwidth of WAN1 and WAN2 by using Weighted Round Robin to balance the loading.

If (upstream / downstream / upstream or downstream) bandwidth is excessive (30%, 40%, 50%, 60%, 70%, 80%,

90%), bring up the second link.

When there is an inactivity time-out (None/10min/20min/30min/40min/50min/60min), the second link will be

terminated.

Click the

Save Settings

button to save the Dual WAN Load Balance settings or click the

Cancel Changes

button

to undo the changes.

System Management Tab - SNMP

SNMP, or Simple Network Management Protocol, is a network protocol that provides network administrators with

the ability to monitor the status of the Router and receive notification of any critical events as they occur on the

network. The Router supports SNMP v1/v2c and all relevant Management Information Base II (MIBII) groups. The

appliance replies to SNMP Get commands for MIBII via any interface and supports a custom MIB for generating

trap messages. See Figure 6-24.

To configure SNMP, enter the necessary information in the following fields:

Enable SNMP: SNMP is enabled by default. To disable the SNMP agent, leave the box blank.

System Name: This is the hostname of the Router.

Figure 6-22: Dual-WAN Smart Link Backup

Figure 6-23: Dual WAN Load Balance

Figure 6-24: SNMP

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Chapter 6: Set Up and Configure the Router

System Management Tab - Diagnostic

10/100 4-Port VPN Router

System Contact: Enter the name of the network administrator for the Router.

System Location: The network administrator's contact information is placed into this field. Enter an E-mail

address, telephone number, or pager number.

Get Community Name: Create a name for a group or community of administrators who can view SNMP data. The

default value is “Public”.

Set Community Name: Create a name for a group or community of administrators who can receive SNMP traps. A

name must be entered.

Trap Community Name: Type the Trap Community Name, which is the password sent with each trap to the SNMP

manager.

Send SNMP Trap to: Enter the IP or Domain Name in this field and the Router will send traps to it.

Click the

Save Settings

button to save the SNMP settings or click the

Cancel Changes

button to undo your

changes.

System Management Tab - Diagnostic

The Router has two built-in tools that will help with troubleshooting network problems.

DNS Name Lookup

The Internet has a service called the Domain Name Service (DNS), which allows users to enter an easily

remembered host name, such as www.RV042.com, instead of numerical TCP/IP addresses to access Internet

resources. The Router has a DNS lookup tool that will return the numerical TCP/IP address of a host name.

Enter the host name to look up in the Look up the name field and click the

Go

button. Do not add the prefix

http://, otherwise the result will be Address Resolving Failed. The Router will then query the DNS server and

display the result at the bottom of the screen. See Figure 6-25.

Note: The IP address of the DNS server must be entered in the Network Settings page for the DNS Name Lookup

feature to function.

Ping

The Ping test bounces a packet off a machine on the Internet back to the sender. This test shows if the Router is

able to contact the remote host. If users on the LAN are having problems accessing services on the Internet, try

Figure 6-25: DNS Name Lookup

Figure 6-26: Ping

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Chapter 6: Set Up and Configure the Router

System Management Tab - Factory Default

10/100 4-Port VPN Router

pinging the DNS server, or other machine at the ISP’s location. If this test is successful, try pinging devices

outside the ISP. This will show if the problem lies with the ISP’s connection. See Figure 6-26.

Enter the IP address of the device being pinged and click the

Go

button. The test will take a few seconds to

complete. Once completed, a message showing the results will be displayed at the bottom of the Web browser

window. The results include Packets transmitted / received / loss and Round Trip Time (Minimum, Maximum, and

Average).

Note: Ping requires an IP address. The Router’s DNS Name Lookup tool may be used to find the IP address of a

host.

System Management Tab - Factory Default

The “Factory Default” button can be used to clear all of your configuration information and restore the Router to

its factory default settings. Only use this feature if you wish to discard all other configuration preferences.

Click the

Return to Factory Default Setting

button if you want to restore the Router to the factory default

settings. See Figure 6-27. After clicking the button, another screen, as shown in Figure 28 will appear. Click

OK

to

continue. Another screen will appear while the system reboots, as shown in Figure 29.

Figure 6-27: Factory Default

Figure 6-29: System is Rebooting

Figure 6-28: Are You Sure

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Chapter 6: Set Up and Configure the Router

System Management Tab - Firmware Upgrade

10/100 4-Port VPN Router

System Management Tab - Firmware Upgrade

Firmware Upgrade

Users can use the following function to upgrade the Router’s firmware to the newest version. If you have already

downloaded the firmware into your computer, then click the

Browse

button to look for the file. Then, click the

Firmware Upgrade Right Now

button. See Figure 6-30.

Firmware Download

Users can click the

Firmware Download from Linksys Web Site

button to link to the downloads on the Support

page of the Linksys website. Select the Router from the pull-down menu and choose the firmware from the

options. After downloading the firmware, follow the Firmware Upgrade instructions above.

System Management Tab - Restart

The recommended method of restarting your Router is to use this “Restart” tool. Restarting with this button will

send out your log file before the box is reset. Click the

Restart Router

button to restart the Router. See Figure

6-31.

System Management Tab - Setting Backup

This tab allows you to make a backup file of your Preferences file for the Router. See Figure 6-32.

Import Configuration File:

You will need to specify where your Preferences file is located. Click the

Browse

button, and your browser will

bring up a dialog that will allow you to select a file that you have previously saved using the Export button. After

you select the file, click the

Import

button. This process may take up to a minute.

You will then need to restart

your Router in order for the changes to take effect.

Figure 6-31: Restart

Figure 6-30: Firmware Upgrade

Figure 6-32: Setting Backup

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Chapter 6: Set Up and Configure the Router

Firewall Tab - General

10/100 4-Port VPN Router

Export Configuration File:

To use this feature, click the

Export

button, and your browser will bring up a dialog asking you where you would

like to store your Preferences file. This file will be called “RV042.exp” by default, but you may rename it if you

wish. This process may take up to a minute. See Figure 33.

Firewall Tab - General

From the Firewall Tab, you can configure the Router to deny or allow specific internal users from accessing the

Internet. You can also configure the Router to deny or allow specific Internet users from accessing the internal

servers. You can set up different packet filters for different users that are located on internal (LAN) side or

external (WAN) side based on their IP addresses or their network Port number. See Figure 6-36.

Firewall: The default is enabled. If users disable the Firewall function, SPI, DoS, Block WAN Request will be

disabled, Remote Management will be enabled and Access Rules and Content Filter will be disabled.

SPI (Stateful Packet Inspection): The Router's Firewall uses Stateful Packet Inspection to maintain connection

information that passes through the firewall. It will inspect all packets based on the established connection, prior

to passing the packets for processing through a higher protocol layer.

DoS (Denial of Service): Protect internal networks from Internet attacks, such as SYN Flooding, Smurf, LAND, Ping

of Death, IP Spoofing and reassembly attacks.

Block WAN Request: This feature is designed to prevent attacks through the Internet. When it is enabled, the

Router will drop both the unaccepted TCP request and ICMP packets from the WAN side. The hacker will not find

the Router by pinging the WAN IP address. If DMZ is enabled, this function will be disabled.

Remote Management: This Router supports remote management. If you want to manage this Router through the

WAN connection, click

Enable

. You can select port 80 or port 8080 for remote management.

Multicast Pass Through: IP Multicasting occurs when a single data transmission is sent to multiple recipients at

the same time. Using this feature, the Router allows IP multicast packets to be forwarded to the appropriate

computers.

MTU (Maximum Transmission Unit): This feature specifies the largest packet size permitted for network

transmission. It is recommended that you enable this feature. The default of MTU size is 1500 bytes.

Figure 6-34: Firewall

Figure 6-33: Save File

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