I remember that question.

The worst part of that particular question that you referenced was that the person who asked it refused to describe _why_ he wanted to do what he was doing.

That's a problem, because it indicates the user has probably fallen into [the XY problem][1] trap.

There may actually be reasons why this particular solution might seem to be right, but without knowing the entire situation, it is impossible to say. For instance, a person might have thought of this as the solution to [a bug in the firewall][2], where reconfiguring the firewall or updating its firmware would have been a better solution.

Instead of merely asking how to implement your "solution" (which might be a less than optimal solution) try focusing more on the problem you are facing, which led you to consider this solution.


  [1]: http://meta.stackexchange.com/q/66377/189912
  [2]: http://serverfault.com/q/411165/126632