Access denied

why this message come out ?
is it because the URL contains ':82' if yes how to
solve this problem

thanks..
========================================
ERROR
The requested URL could not be retrieved
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While trying to retrieve the URL: http://gso.upm.edu.my:82/

The following error was encountered:

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Generated Mon, 09 Aug 1999 07:41:13 GMT by proxy.petra.ac.id
(Squid/2.2.STABLE3)
Received on Mon Aug 09 1999 - 01:29:54 MDT