Addertjes Onder Het Gras / hiaten

This web page shows some downsides I found in software packages. Each of them, on their own, can cause major troubles to newbies trying to use the software. For more experienced people they spoil the fun using the software and often cause headaches. Some issues may exist by incident, some may be caused by policy of the software author. As soon as an issue is gone to my knowledge, it will be striked out from this website. Known workarounds will be listed too, as long as they are required.
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Insists on polluting HTTP response headers

  • This cannot be disabled because of developers policy, even though they could easily resolve this.
  • This can only be worked around by using a reverse proxy server (for example Nginx) at a cost of complexity and performance, or manually modifying and recompiling the source code, or binary patching the executable files.

Leaks PHP source code if lacking PHP module

This can happen easily while upgrading a Linux system and using 'sudo apt-get autoremove' to get rid of 'unused' packages which are not properly marked as required, or during upgrade from PHP 5 to PHP 7.0. Workaround: # Add extra security by preventing access to PHP source code in case of troubles with PHP module. # (caution if using only 'sudo service apache2 reload' rather than 'sudo service apache2 restart'!). # source: <IfModule !php7_module> <FilesMatch "\.(php|phtml)$"> Require all denied </FilesMatch> </IfModule>


'apache2' is a highly configurable and very stable web server. Unfortunately it does not put the user in ultimate control of what is output to the network, but rather the developers/source code compilers.