Comment Network best practices may say this... (Score 2) 348
"A firewall is a MUST".... However
1.) If you are a contractor (or an employee for that matter), and you're explicitly told not to do something, document your concerns, in writing and either do what they tell you or quit. This covers your butt when thing blow up. Note I said, when, not if. You don't get to dictate the business objectives in either case (contractor or employee).
2.) The networks/firewalls are only one part of the picture. I've noted other posts asking questions concerning the surrounding environment. These are good, even if they don't address point (1.) If a "best practice" for an element in the environment breaks the environment, then the "best practice" is invalid and MAY be ignored. It may also be that the app in question is brain dead, but that's a whole 'nother topic.
I've seen way too many "best practices" that do not account for the specific environment and even more "checklist" jockeys who can't figure out how to make things work without them. Learn to do more than to follow a flowchart/checklist.