Please do make an effort to do your homework and read up on the subject yourself. ... sorry ... !!!! .... I said some days before I'm quiet new with firewalling, so I don't know what's just usual and what not ... ... otherwise I'm not new with networking ... ... and I thought this Mailing-List is to help if somebody has a problem ... isn't it ? So, I've blocked everything with UDP going out except 53 ... is that ok ? Mit freundlichen Grüßen Bruno Leonhardt CLP Domino R5 Systemadministrator ________________________________________________________________________________________________________ AnalyTek Systemhaus Hospitalstr. 2a D-65589 Hadamar Tel.: 06433/81403-15 Fax : 06433/81403-40