Many of our projects (student projects as well as research projects) run on one of our local machines, for example on vulcano.informatik.privat:8400, but should be accessible from the outside, for example via http://aqqu.cs.uni-freiburg.de/proxy-test. This is non-trivial, if the latter URL is not only a top-level URL, but contains a path, like the /debug in the example.

== Apache Config ==

The first step is to find out, which virtual host deals with the domain. In the example above, it's the Apache virtual host configured in filicudi:/etc/apaches2/sites-available/aqqu.conf and it contains (among others) the following lines:

<VirtualHost *:80>
  ServerName aqqu.informatik.uni-freiburg.de
  ServerAlias aqqu aqqu.cs.uni-freiburg.de
 
  [...]

  ProxyPass /proxy-test http://vulcano.informatik.privat:8400
  ProxyPassReverse /proxy-test http://vulcano.informatik.privat:8400
  
  [...]

</VirtualHost>

The effect of the ProxyPass line is that when somebody types http://aqqu.cs.uni-freiburg.de/proxy-test/<something> in the browser, then vulcano.informatik.privat:8400 gets the request /<something>. Note that details like a trailing / or not in the line in the configuration file are important.