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Wireless ADSL2+ Modem Router DG834Gv5 User Manual
Managing Your Network
4-8
v1.0, March 2010
This screen shows the following statistics:
Viewing Attached Devices
The Attached Devices screen contains a table of all IP devices that the modem router has
discovered on the local network. From the main menu, under the Maintenance heading, select
Attached Devices. The Attached Devices screen displays:
For each device, the table shows the IP address, device name if available, and the Ethernet MAC
address. Note that if the modem router is rebooted, the table data is lost until the modem router
rediscovers the devices. To force the modem router to look for attached devices, click the
Refresh
button.
Viewing, Selecting, and Saving Logged Information
The modem router logs security-related events such as denied incoming service requests, hacker
probes, and administrator logins. If you enabled content filtering in the Block Sites screen, the
Logs screen can show you when someone on your network tries to access a blocked site. An
example of the logs file is shown in the following figure:
Table 4-3.
Connection Status Fields for PPPoA
Field
Description
Connection Time
The time elapsed since the last connection to the Internet via the ADSL port.
Connecting to
Sender
The connection status.
Negotiation
Success or Off.
Authentication
Success or Off.
IP Address
The IP address assigned to the WAN port by the ADSL Internet Service Provider.
Network Mask
The network mask assigned to the WAN port by the ADSL Internet Service Provider.
Figure 4-6
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Wireless ADSL2+ Modem Router DG834Gv5 User Manual
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Log entries are described in the following table.
Figure 4-7
Table 4-4.
Security Log Entry Descriptions
Field
Description
Current time
The date and time the log entry was recorded.
Description or action
The type of event and what action was taken if any.
Source IP
The IP address of the initiating device for this log entry.
Source port and interface
The service port number of the initiating device, and whether it
originated from the LAN or WAN.
Destination
The name or IP address of the destination device or website.
Destination port and interface
The service port number of the destination device, and whether it is on
the LAN or WAN.
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Wireless ADSL2+ Modem Router DG834Gv5 User Manual
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Selecting Which Information to Log
Besides the standard information listed previously, you can choose to log additional information.
Those optional selections are as follows:
Attempted access to blocked site
Connections to the Web-based interface of the modem router
Modem Router operation (start up, get time, etc.)
Known DoS attacks and port scans
Saving Log Files on a Server
You can choose to write the logs to a computer running a syslog program. To activate this feature,
select to the
Broadcast on LAN
radio button or enter the IP address of the server where the syslog
file will be written.
Log Message Examples
Following are examples of log messages. In all cases, the log entry shows the timestamp as: Day,
Year-Month-Date
Hour:Minute:Second.
Activation and Administration
Tue, 2002-05-21 18:48:39 - NETGEAR activated
[This entry indicates a power-up or reboot with initial time entry.]
Tue, 2002-05-21 18:55:00 - Administrator login successful - IP:192.168.0.2
Thu, 2002-05-21 18:56:58 - Administrator logout - IP:192.168.0.2
[This entry shows an administrator logging in and out from IP address 192.168.0.2.]
Tue, 2002-05-21 19:00:06 - Login screen timed out - IP:192.168.0.2
[This entry shows a time-out of the administrator login.]
Dropped Packets
Wed, 2002-05-22 07:15:15 - TCP packet dropped - Source:64.12.47.28,4787,WAN -
Destination:134.177.0.11,21,LAN - [Inbound Default rule match]
Sun, 2002-05-22 12:50:33 - UDP packet dropped - Source:64.12.47.28,10714,WAN -
Destination:134.177.0.11,6970,LAN - [Inbound Default rule match]
Sun, 2002-05-22 21:02:53 - ICMP packet dropped - Source:64.12.47.28,0,WAN -
Destination:134.177.0.11,0,LAN - [Inbound Default rule match]
[These entries show an inbound FTP (port 21) packet, User Datagram Protocol (UDP) packet
(port 6970), and Internet Control Message Protocol (ICMP) packet (port 0) being dropped as a
result of the default inbound rule, which states that all inbound packets are denied.]
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Wireless ADSL2+ Modem Router DG834Gv5 User Manual
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Managing Your Network
v1.0, March 2010
Running Diagnostic Utilities and Rebooting the Modem
Router
The modem router has a diagnostics feature. You can use the Diagnostics screen to perform the
following functions from the modem router:
Ping an IP address to test connectivity to see if you can reach a remote host. If Ping VPN is
enabled, the ping packet always goes through the VPN if the VPN tunnel is enabled and
working.
Perform a DNS lookup to test if an Internet name resolves to an IP address to verify that the
DNS server configuration is working.
Display the routing table to identify what other modem routers the modem router is
communicating with.
Reboot the modem router to enable new network configurations to take effect or to clear
problems with the modem router’s network connection.
From the main menu, under the Maintenance heading, select Modem Router Diagnostics to
display the Diagnostics screen:
Figure 4-8
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Wireless ADSL2+ Modem Router DG834Gv5 User Manual
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Enabling Remote Management
Using the Remote Management screen, you can allow a user or users on the Internet to configure,
upgrade, and check the status of your modem router.
Configuring Remote Management
1.
Log in to the modem router at its default LAN address of
with its default
user name of
admin
default password of
password
, or using whatever user name, password
and LAN address you have chosen for the modem router.
2.
Under the Advanced heading of the main menu, select Remote Management to display the
Remote Management screen:
3.
Select the
Turn Remote Management On
check box.
4.
Specify which external addresses will be allowed to access the modem router’s remote
management.
For security, restrict access to as few external IP addresses as practical:
Tip:
Be sure to change the modem router default password to a very secure password.
The ideal password should contain no dictionary words from any language, and
should be a mixture of letters (both upper-case and lower-case), numbers, and
symbols. Your password can be up to 30 characters.
Figure 4-9

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