I just released a new mod on CurseForge.com called Block Blocker. What it does is allow a server admin or pack maker to preset which blocks from any type of mod that the player can not break and can not place.
This is advantageous for those wishing to design a hardmode pack. For instance you could disable the harvesting of dirt blocks and require that they make TNT to harvest them.
There are also times when in certain packs, for those using the Ice and Fire mod for 1.11.2 you have block that when harvested crashes your entire server and any connected clients. Therefore you add that block to the config and when you restart your server you don't have to worry about that scenario any longer.
You can get the mod from https://minecraft.curseforge.com/projects/block-blocker