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On Wed, Mar 17, 2004 at 05:30:24PM -0500, STeve Andre' wrote:

   Hmmm.  How can you effectively make a policy for what ports to
   block or pass?
[snip]

You can... that *is* the firewall policy.  I agree with many of the
points you make, but there is a difference between a security policy
and a firewall policy.  Jim is taking the right approach by developing
a security policy first.  The security policy itself should be fairly
static, because your business needs don't change that much.  Using a
committee or a board is probably a good thing, because it will be a
more precise picture of what your business needs are and shouldn't be
dictated by an IT unit/person.  sans.org has some good template
documents/policies.

The security policy isn't going to say what ports to block on your
firewall... that's what a firewall policy is.  However, a security
policy should guide your implementations (security in
practice... i.e. anti-virus, perimeter defense including firewalls,
account practices, etc.)  Implementations are going to be dynamic,
often reactions to a new threat, but your security policy should guide
the day-to-day decisions (something the IT unit/person does, but then
you have backing of your committee/board via your security policy) you
make to mitigate those threats.

Hope this helps clarify some concepts.

Thanks,
dpk