Since this is a forum for professional networking, I consider helping people to bypass network policies (for a network over which they have no control) to be unethical. I have to think how I would feel if that were my network since an anonymous OP may actually be a user on my network.
Questions related to bypassing network security or policies, except where they relate to preventing such breaches, are off-topic. Assisting in breaches of network security/policy may leave discussion participants open to criminal prosecution and/or civil damages.
White-hat network hacking may be an exception, but it may also be something that shouldn't be discussed in such an open forum. This can be compared to the software/hardware flaw disclosure debate. The vendors (or in this case, the network managers) want to have a chance to fix the problem before it is revealed to the general public. It is a fine line that I want to stay as far away from as possible since there are legal and civil ramifications.