I've made a migration to a FreeBSD linux and after the migration, the frontend is working fine, but the administration does not work. The problem is when I after having logged in, I try to change publication, or add an article or show the users, the message is "You do not have the right to access this page". I did a php debug and I could see that all the variables passed on Query String were empty on th $_REQUEST php variable, so the admin pages couldn't retrieve the parameters passed by the url and the admin panel didn't work.
Also the webserver it's not apache, but I don't know yet what server is and there is not .htaccess.