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Page 41 / 103 Scroll up to view Page 36 - 40
32
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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33
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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34
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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35
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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36
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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