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Firewall
75
Contnet
!
Filter
You can subscribe to the 3Com Content Filter Service, which enables you
to block or allow the URL of a number of pre-defined categories.
The Router comes with a 14-day free trial of the 3Com Content Filter
Service. To activate the 14-day free trial of the service, you must first
register your Router at www.3com.com. To continue using the service
after the trial period, you must purchase the Full 3Com Content Filter
Service(3CS8CFS).
URL Filtering rules supersede content filtering rules. If the 3Com Content
Filter is blocking certain Web sites that you want to allow, you can add
these sites to URL Filter's allow list.
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76
C
HAPTER
5: R
OUTER
C
ONFIGURATION
To activate Content Filtering:
1
Select Firewall form the main menu, then select the Content Filter tab.
The Content Filter screen displays.
Figure63
!
Content Filter Screen
2
Make sure the
Enable Content Filter
check box is checked.
3
Select the
Content Filter Server
that you require from the drop-down list.
If you select
custom entry
, enter the server IP address in the text box.
4
Select the
Server Timeout
value in milliseconds. The default is 3000
milliseconds (3 seconds).
5
Select
Allow
or
Deny
for each displayed category, as required.
Click
Apply
to save the settings.
Click
Save to save
the settings.
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Firewall
77
System Tools
The main frame of the System Tools screen includes four administration
items:
Restart
,
Time Zone, Configuration, and Upgrade
.
Restart Restart Screen
If your Router is not operating correctly, you can choose to restart the
Router by selecting
Restart the Router
, simulating the effect of power
cycling the unit. No configuration information will be lost but the log files
will be erased. this function may be of use if you are experiencing
problems and you wish to re-establish your Internet connection. Any
network users who are currently accessing the Internet will have their
access interrupted whilst the restart
!
takes place, and they may need to
reboot thier computers when the restart has completed and the Router is
operational again.
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78
C
HAPTER
5: R
OUTER
C
ONFIGURATION
Time Zone
Time Zone Screen
Choose the time zone that is closest to your actual location. The time
zone setting is used by the system clock when displaying the correct time
in the log files.
If you use Daylight saving tick the
Enable Day Light savings
box, and then
click
Save
.
The Router reads the correct time from NTP servers on the Internet and
sets its system clock accordingly. The Daylight Savings option merely
advances the system clock by one hour. It does not cause the system
clock to be updated for daylight savings time automatically.
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Firewall
79
Configuration
Configuration Screen
Select the
Configuration
tab to display the
Configuration
screen .
Backup Configuration
Click
BACKUP
to save the current Router configuration. You will be
prompted to download and save a file to disk.
Restore Configuration Data
If you want to reinstate the configuration settings previously saved to a
file, press
Browse
to locate the backup file on your computer, and then
click
RESTORE
to copy the data into the Router's memory.
The password will remain unchanged.
Reset to Factory Default
If you want to reset the settings on your Router to those that were loaded
at the factory, click
RESET
. You will lose all your configuration changes.
The Router LAN IP address will revert to
192.168.1.1, and the DHCP
server on the LAN will be enabled. You may need to reconfigure and
restart your computer to re-establish communication with the Router.