Successful "GET http://" requests .. proxy disabled

I have mod_proxy disabled in my httpd.conf and have no proxy directives set up whatsoever in there. However, I am still seeing successful looking proxy requests in my logs:
222.208.168.142*[02/Feb/2005:17:06:16 -0700]*GET http umsky com/prxjdg.php HTTP/1.1*-*Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.1)*404*216*-
222.208.168.142*[02/Feb/2005:17:06:19 -0700]*GET http umsky com/prxjdg.php HTTP/1.1*-*Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Crazy Browser 1.0.5)*404*216*-
222.208.168.142*[02/Feb/2005:17:06:20 -0700]*GET http umsky com/prxjdg.php HTTP/1.1*-*Mozilla/4.0 (compatible; MSIE 5.0; Windows NT 5.1)*200*8540*-

Where I've put spaces in the url so it's postable.
So it looks like the first two requests failed with a 404 but the third was succesful? 8540 is not the size of my webserver home page.
I've tried using my browser with my webserver ip as the proxy but just get the webserver web page when I try to go to any page.
How do I lock down my system so these requests are just returned a 403 or ignored or whatever the minimum possible action is to take care of this problem?

Thanks!!!

 

 

 

 

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