User's Manual

Security
30
WiFi Cable Modem Router C3700
Keyword Blocking of HTTP Traffic
Use keyword blocking to prevent certain types of HTTP traffic from accessing your network.
1. From the Advanced tab, select Security > Block Sites.
2. Select one of the keyword blocking options:
• Never. Turn off keyword blocking.
• Per Schedule
. T
urn on keyword blocking according to the Schedule screen settings.
(See Schedule Blocking on page 32.)
• Always. T
urn on keyword blocking.
3. In the keyword field, enter a keyword or domain, click Add URL Keyword, and click the
Apply button.
The keyword list supports up to 32 entries. Here are some sample entries:
• Specify XXX to block http://www
.badstuf
f.com/xxx.html.
• Specify .com if you want to allow only sites with domain suffixes such as .edu or .gov
.
• Enter a period (.) to block all Internet browsing access.
 To delete a keyword or domain:
1. Select the keyword that you want to delete from the list.
2. Click Delete URL Keyword.
3. Click the Apply button.
4. Y
our changes are saved.
 To specify a trusted computer:
You can exempt one trusted computer from blocking and logging. The computer that you
exempt must have a fixed IP address.
1. Select Allow trusted IP address to visit blocked sites.