I want to set up my FutureBit Apollo II Full Node in a way to block any inbound and outbound connections to Core 30.
How can this be achieved? Please help.
Stuff like this is not helpful regardless of what side you are on in this debate, and where it relates for futurebit mining nodes specifically this is going to cause you to get an orphaned block.
bitcoins ability to connect to all freely available nodes that are protocol compatible is paramount. Get used to many more clients you dont agree with in the future.
All futurebit nodes run 25.1 currently, and will upgrade to 28.1 in the upcoming OS 2.1 update. We are several years away from even considering 30 as the default, and by then hopefully this will all be sorted out (whether it's a hard/soft fork or not), and you'll be able to choose which client you want regardless in 2.2.
In the meantime you have to remember we are in a unique situation where most futurebit nodes are mining nodes, so if you are solo mining dont shoot yourself in the foot. If you block yourself from other nodes, what most likely will happen is these nodes are being run by the major pools, so therefore you will not receive the latest block, and if you do it will be super late and most likely result in an orphaned block.