Hi, I think this tutorial is done, but I would like to get others' opinion too. If someone feels that anything else should go into this material, or has some critics please let me know. The source is available from: http://sp.web.elte.hu/firewall-tutorial-src/ bzipped: http://sp.web.elte.hu/firewall-tutorial-src/firewall-tutorial-0.3.2.tar.bz2 The HTML form is at: http://sp.web.elte.hu/firewall-tutorial-en/ Peti