Hello there Ge64.
We have discussed this quite extensively among the staff lately, and have reached a consensus.
Illegal activities are definitely not encouraged. But in your case you are not asking for help for sharing P2P files (which is illegal, although the technology by itself is not), rather you are asking for a firewall that would suit your purpose. I believe that is alright, but we will wait for more comments from the staff when they come online.
Thank you for your comments.
@Arctos
Maybe other forums would do that, but PCHF would definitely not ban/warn members for simply raising reasonable objections to any moderator's action.