Marko Have a look at ....... http://www.noether.freeserve.co.uk there's a good security page. See also ...... http://www.linuxnewbie.org when you've had a look at those I can mail a firewall script to you that I wrote myself. I used to help Robert Zeigler with his work on firewalls. He has now written a book called "Linux Firewalls". You can view the book at.... http://www.newriders.com also... http://www.sheflug.co.uk/newriders.html the new SuSE firewall which is available as an RPM is excellent but it doesn't help you to learn too much about ipchains. Iptables is now coming into use. If you get to know ipchains then iptables should be easy to understand. Thanks Richard Sheffield Linux User's Group http://www.sheflug.co.uk