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67
Log
Linksys
Log
The router has the real-time surveillance management feature that provides
information about current system operation. From the log management and
look up, we can see the relevant operation status and traffic statistics. Setup
error and attack alerts here.
System Log
Go to Device Configuration > Log > System Log page to configure syslog and
alerts. You can also view the log tables here.
NOTE:
Remember to click Save
before leaving the page. You can also click Cancel to
leave without any change.
Syslog
The device provides external system log servers with a log collection feature.
System log is an industrial standard communications protocol, which is
designed to dynamically capture related system messages from the network.
The system log provides the source and the destination IP addresses during the
connection, service number, and type.
Enable Syslog
Check to enable syslog.
Syslog Server
Enter the syslog server name or IP address.
Email Alert
Enable email alerts to send logs to a specified email address.
Enable Email Alert:
Check to enable.
Mail Server :
Click “Configure Mail Server” to configure outgoing
mail server.
Send Email to:
Input the email address for receiving email alerts.
Log Queue Length:
Set the number of log entries. The default entry
number is 50. When this defined number is reached,
the system will automatically send out the log mail.
Log Time Threshold:
Set a time interval for the system to send the log. The
default is 10 minutes. The system will automatically
send out the log every 10 minutes unless you change
the interval.
Email Log Now:
Click this button to immediately send a message to
the specified email address, to test your settings.
Log Setting
Choose which events will be reported in the logs.
Alert Log:
Click to activate these alerts: Syn Flooding, IP Spoofing, WinNuke,
Ping of Death / Unauthorized Login Attempt.
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68
Log
Linksys
Syn Flooding
Heavy syn packet transmission in a short time overloads the
system.
IP Spoofing
Hackers use packet sniffing to intercept data transmitted on
the network. They then change the sender’s IP address to
access the source system.
WinNuke
Servers are attacked or trapped by a trojan program.
Ping of Death
The system fails because the sent data exceeds the maximum
packet that can be handled by the IP protocol.
Unauthorized
Login Attempt
If intruders into the device are identified, the message will
be sent to the system log.
General Log
Click to activate the features, including System error message,
blocked regulations, regulation of passage permission, system configuration
change and registration verification.
System
Error
Messages
Identifies system errors.
Deny Policies
Records when remote users fail to enter the system because
of access rules.
Allow Policies
Records when remote users enter the system through
successful authentication.
Configuration
Changes
Records changes in the system’s configuration.
A u t h o r i z e d
Login
Records authorized logins.
Four buttons for interaction with the system log online.
View
System
Log
Read message content online via the device.
Outgoing
Log
Table
View log packets that have been sent out from the PC to
the Internet. Information includes LAN IP, destination IP, and
service port.
Incoming
Log
Table
View system packet log of those entering the firewall.
Information
includes
external
source
IP
addresses,
destination IP addresses, and service ports.
Clear Log
Clears all the current information on the log.
System Statistics
Go to
Configuration > Log > System Statistics
page to view statistics of all router
interfaces.
Click
Refresh
button to update the statistics.
Interface
Indicates interface: WAN, LAN and DMZ.
Device Name
Port ID: eth0, eth1, eth2, and so on.
Status
Port status:
Connected, Disconnected, Enabled,
or
Disabled
.
IP Address
IP address.
MAC Address
MAC address.
Subnet Mask
Subnet mask.
Default Gateway
Default gateway IP address.
DNS
DNS server.
Received Packets
Number of received packets.
Sent Packets
Number of sent packets.
Total Packets
Number of packets sent and received.
Received Bytes
Number of received bytes.
Sent Bytes
Number of sent bytes.
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69
Log
Linksys
Total Bytes
Number of bytes sent and received.
Error
Packets
Received
Number of received error packets.
Dropped Packets
Received
Number of received dropped packets.
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70
Maintenance
Linksys
70
Maintenance
Diagnostic
The device provides a simple online network diagnostic tool to help users
troubleshoot network-related problems. Go to Maintenance > Diagnostic.
The features include DNS Lookup (Domain Name Inquiry Test) and Ping (Packet
Delivery/Reception Test).
DNS Name Lookup
Choose this option to test connectivity to the DNS server that you specified on
the Configuration > Setup > Network page, or to look up an IP address that you
want to use in the ping test.
Enter a host name – example: www.linksys.com (Do not include a prefix such as
http://) - and click Go. You will see the IP address of the host.
NOTE:
This feature requires that the router can connect to a valid DNS server. Please
check if your WAN interface can be linked to the Internet.
Ping
This feature informs users of the status quo of the outbound session and allows
users to know if computers are online or not.
On this screen, please enter the host IP that users want to test such as
192.168.5.20. Press Go to start the test. The result will be displayed on this
screen.
Factory Default
Use the Maintenance > Factory Default page to restore the router to its factory
default settings.
1.
Click Factory Default if you want to restore the router to its factory default
settings except
OpenVPN
configuration. When the confirmation message
appears, click
OK
to continue or click
Cancel
to abandon.
2.
Click
Factory Default including OpenVPN
if you also want to restore
OpenVPN configuration. When the confirmation message appears, click
OK
to continue or click Cancel to abandon.
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71
Maintenance
Linksys
Firmware Upgrade
Users may directly upgrade the device firmware on the Firmware Upgrade
page. First download the firmware file from Linksys.com. Go to Maintenance >
Firmware Upgrade. Please confirm all information about the software version
in advance. Select and browse the software file, click Firmware Upgrade button
to complete the upgrade of the designated file.
NOTE:
1.
When choosing previous firmware versions, all settings will be restored
back to default.
2.
Upgrading firmware may take a few minutes, so please don’t turn off the
power or press the reset button.
3.
Please don’t close the window or disconnect the link during the upgrade
process.
Restart
Go to Maintenance > Restart.
Click
Restart Router
to reboot the router, and then click
OK
to continue or click
Cancel
to abandon.
Backup and Restore
Go to Maintenance > Backup and Restore page. You can export the current
configuration or restore existing backup settings here. You can back up two
kinds of configuration files: the startup and the mirror configuration. The router
will load the startup configuration file when it boots up, and copy the startup
file to the mirror configuration. If the startup configuration file fails, the mirror
configuration file will be adopted.
NOTE:
If the router operates for 24 hours without reboot or configuration changed,
the startup configuration will be copied to mirror configuration automatically.
Restore Startup Configuration
You can import an existing configuration file (.config) to the router. Click
Browse in the Restore Startup Configuration section and find the file, and then
click Restore to import the configuration.
Backup Configuration File
You can export your startup and mirror configuration files to your computer.
If needed, you can use these files to restore the settings. Click Backup Startup
Configuration or Backup Mirror Configuration. The default filenames will be
Startup.config or Mirror.config. You can change the filenames if you wish.
Copy Configuration File
You can copy your startup configuration file to your mirror configuration file or
copy mirror to your startup configuration manually.
NOTE:
Make a current configuration file before doing this action so that you can
return to the current configuration if not satisfied with the startup or mirror
configuration file.

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