Security Policy
    Must state what is/is not allowed
        Controls Firewall decisions
        Tells employees what is/is not OK
    No policy ==> Anything goes
    Need top management backing
        --> Office Politics
    Based in part on 
        What you are trying to protect
        Date & Systems Integrity & availability
    Reference: Zwicky, Chapter 25
        Sonnenreich, p 34
        Cheswick & Bellovin