There are some obstacles on the way from Apache to Lighttpd. But a planned and careful approach will allow us to keep our server working while we change it. The .htaccess scanner script can be a stop gap measure to smoothen the transition for .htaccess authentication users. Finally, a heavy use of rewrite rules can make it tricky to move. However, we can translate them one by one into something that will work with Lighttpd, especially when we add Lua to the mix as we will show in the following chapter.