Is Proxy on Mac OS X Server really an open proxy by default?
Looking at log files may be indecent
Just had a look at an installed Mac OS X Server log file somewhere. Went to switch off the web proxy immediately. There were tons of requests from clients all around the world to GET all kind of stuff ("GET http://www.yahoo.com HTTP/1.1" in the log). A quick search through Apples Documentation, Discussion Board, Knowledge Base, & the Web in general did not reveal any information about how the proxy might be restricted to local subnet users only. So off it went.