In the comments, your original assertion was that you had similar questions "blocked in the past."
Looking at the history of your questions, you had one that was closed for being a home networking question and two that were asking about the operation of SPDY.
In response, you said you thought they were similar because "they cover an application-layer protocol."
So, let's look at your two SPDY question titles (I won't link them as they are deleted and won't be viewable by most members of the community).
- Why are the headers of this SPDY SYN_STREAM sample apparently uncompressed?
- Where is SPDY/HTTP2 server hinting defined?
In both these cases you are asking about details regarding the application layer protocol, and a protocol which has nothing to do with networking in general (not routing, IP, etc). It is purely an application level protocol used by applications.
In the case of this question, it is not a question about application protocols. It is at it's heart a question about the requirements of a network/security policy and why such a policy would have such a requirement.
Implementation and enforcement of network/security policies is directly in line with the types of questions that face network professionals.