Firewall Wizards mailing list archives

Re: Link from DMZ to Internal Apps


From: "Marcus J. Ranum" <mjr () nfr com>
Date: Mon, 18 Feb 2002 09:48:52 -0500


Due to departure of more experienced security minds in
our healthcare organization, I am faced with making
inexperienced decisions on demands for external access
to internal applications.

One thing to get familiar with is HIPAA - it's a government
guideline/standard "protecting the confidentiality and integrity of
'individually identifiable health information,' past, present or future."
You should make sure that whatever access you're providing
is OK under HIPAA...

Our Web
dev team just released a "portal" for these users that
aggregates some of the info they need and we have this
available on the outside via our DMZ environment, but,
of course, they want more.

Presumably the "portal" is using some kind of security, yes?
Maybe SSL on the links at a minimum? ..?

 As more of our legacy
internal apps move to Web, these users want us to
simply "link" them to these internal apps from the
externally available portal.  This to me would appear
to simply bring external users directly to the inside
defeating the purpose of the separate web environment
in the DMZ.

Actually the fact that your organization is set up so that
some bunch of Web Developers can just build and deploy
a "portal" (whatever that is...) without having to interface
with your security practitioners indicates to me that you're
probably already in trouble, security-wise...

Normally, I wouldn't recommend a strategy like this, but
since it sounds like a plate of spaghetti has dropped in your
lap. I'd recommend you pursue a vigorous offensive of butt-covering
while you get spun up on healthcare security and computer
security. You can use the "I am getting spun up on this stuff..."
as a dodge to delay whatever insecure deployments you can
until you learn enough so you can judge the wisdom or non-wisdom
of any security-related deployments yourself. You've got what
sounds to me like a potentially nasty situation. Any organization
where the end users feel empowered to just deploy stuff and/or
apply that kind of pressure on the security organization without
any administrative checks and balances is almost guaranteed to
have serious security failures.

mjr.
---
Marcus J. Ranum          Chief Technology Officer, NFR Security, Inc.
Work:                           http://www.nfr.com
Personal:                      http://www.ranum.com

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