I'm looking for suggestions on how to setup security on my Linux box. I'm going to have NT/Linux machines on my network. Is it better to have NT be a domain controller and handle security or Linux? Are there GUI wrappers around the Samba setup available (doing it via command line truely sucks). I want one point of security admin (1 place to add users and change passwords) for my whole Linux/NT network. This is for a high volume web site, so security is important.