[isapros] Re: ISA, Exchange 2007 and Perimeter Networks

  • From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
  • To: <isapros@xxxxxxxxxxxxx>
  • Date: Sat, 13 Jan 2007 19:47:59 -0800

They do ask; they just don't listen.

I was asked to review a doc on EAS via ISA that's coming out soon and
couldn't get them to drop the "ISA as domain member == bad" mantra...

 

From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx]
On Behalf Of Jason Jones
Sent: Saturday, January 13, 2007 3:46 PM
To: isapros@xxxxxxxxxxxxx
Subject: [isapros] Re: ISA, Exchange 2007 and Perimeter Networks

 

Can't believe they just make their own decision terminology/security
architecture rather than asking ISA product team for advise on what they
should be saying....maybe that is just me being incredibly naive though
;-)

 

________________________________

From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx]
On Behalf Of Thomas W Shinder
Sent: 13 January 2007 17:32
To: isapros@xxxxxxxxxxxxx
Subject: [isapros] Re: ISA, Exchange 2007 and Perimeter Networks

However, one thing I DON'T want to get back to is the "single model" DMZ
-- because the entire point of this conversation is that there is a
heterogeniety of DMZs and that the problem with the Exchange team is
that they didn't understand this in the first place. :)

 

Thomas W Shinder, M.D.
Site: www.isaserver.org <http://www.isaserver.org/> 
Blog: http://blogs.isaserver.org/shinder/
Book: http://tinyurl.com/3xqb7
MVP -- Microsoft Firewalls (ISA)

 

         

________________________________

        From: isapros-bounce@xxxxxxxxxxxxx
[mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Thomas W Shinder
        Sent: Saturday, January 13, 2007 11:23 AM
        To: isapros@xxxxxxxxxxxxx
        Subject: [isapros] Re: ISA, Exchange 2007 and Perimeter Networks

        It's interesting how the canaille misinterprets the term DMZ,
like they do for most things :)

         

        Think about the Korean DMZ -- is that really a "free for all"
place? Or one of the most monitored and secured areas in the world,
where nothing happens without someone knowing about it almost
immediately?

         

        That what you get when the Syphco reps teach a generation of
"port openers"....

         

        Thomas W Shinder, M.D.
        Site: www.isaserver.org <http://www.isaserver.org/> 
        Blog: http://blogs.isaserver.org/shinder/
        Book: http://tinyurl.com/3xqb7
        MVP -- Microsoft Firewalls (ISA)

         

                 

________________________________

                From: isapros-bounce@xxxxxxxxxxxxx
[mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Thor (Hammer of God)
                Sent: Friday, January 12, 2007 5:51 PM
                To: isapros@xxxxxxxxxxxxx
                Subject: [isapros] Re: ISA, Exchange 2007 and Perimeter
Networks

                Interesting... Probably a good idea for us to actually
articulate what we really mean when we say DMZ.
                
                I guess to some it means "free for all network" but for
me, it should be the network where you have the most restrictive
policies controlling each service so that it is obvious when malicious
traffic hits the wire.  Thoughts>
                t
                
                
                On 1/12/07 3:30 PM, "Steve Moffat" <steve@xxxxxxxxxx>
spoketh to all:

                That's what I thought, now it's what I know....
                 
                
                From: isapros-bounce@xxxxxxxxxxxxx
[mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Harrison
                Sent: Friday, January 12, 2007 6:35 PM
                To: isapros@xxxxxxxxxxxxx
                Subject: [isapros] Re: ISA, Exchange 2007 and Perimeter
Networks
                
                Aside from normal router & switch ACLs, ISA is the
single line of defense.
                "..we don't need no stinking DMZs"
                 
                
                From: isapros-bounce@xxxxxxxxxxxxx
[mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Steve Moffat
                Sent: Friday, January 12, 2007 12:12 PM
                To: isapros@xxxxxxxxxxxxx
                Subject: [isapros] Re: ISA, Exchange 2007 and Perimeter
Networks
                
                Ahh...just had a thought.
                 
                It's all labeling.
                 
                Jason, and others (not Jason's fault), have been using
the term DMZ.
                 
                Historically, is the term DMZ not taken literally as
being completely firewalled off from the trusted networks, and what
Jason is talking about is trusted network segmentation.
                 
                I betcha that's why the Exchange team don't support
it...they think it's a typical run of the mill DMZ...
                 
                Jim, isn't MS's Internal network segmented by usin ISA??
Including your mail servers?
                 
                S 

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