3com Webcache 1000 (3C16115) Benutzerhandbuch

to this website has been denied. If you do not agree with this site being 
blocked, please contact extension 1234”.

To customize the response using the Web interface:

1 Click Device View on the Toolbar.

2 Select System -> Caching -> Customize Response in the Navigation 

Tree.

3 Enter up to 512 characters of text or HTML code in the Add This Text field 

that you want to add to the response screen that informs the end user 
that access has been denied. The text or HTML that you enter will be 
appended to the standard text that appears, which is “You are not 
authorized to view this page”. You cannot change or delete this standard 
text.

4 If you want to view your changes before saving them to check that your 

text or HTML is correct, click Preview.

Click OK to save the text or HTML code that you have entered.

There is a default option in Microsoft Internet Explorer 4 and later 
versions that will cause a “friendly HTTP error message” to be displayed 
when a Web site is blocked, rather than the response page generated by 
the Webcache. You can turn this setting off by selecting Tools -> Internet 
Options -> Advanced and unchecking Show friendly HTTP error 
messages. The response page generated by the Webcache will never be 
displayed by Internet Explorer if you do not change this setting. The 
following Microsoft knowledgebase article describes the use of friendly 
HTTP-status error messages:

Web Client Blocking allows you to control which client machines in your 
network can access the Web through the Webcache. If you enable Web 
Client Blocking, you can enter the static IP addresses or IP address ranges 
of client machines that you want to allow access to the Web through the 
Webcache. Web access from all other client machines will be denied by 
the Webcache.

Dynamic Host Configuration Protocol (DHCP) servers can be used with 
Web Client Blocking in two ways: