Hello everyone 
I had one problem on my FTB Ultimate server. I had to ban Mining Lasers and all other stuff, which can pass throught region protections. I used a lot of different plugins, and guess what? Nothing helped. But after a day of intensive thinking I found out one thing, how to ban thos nasty items.
So this is kind of tutorial
STEP 1. Enable command block on your server
You can do it by opening server.properties file and changing this line:
to this one:
If this line doesn't exists just paste this one above 
STEP 2. Launch your server
STEP 3. Make a room somewhere below spawn and put there Timer (Item/Block from RedPower) put some command blocks, and type text like this in them:
Lay down some redstone to connect timer with command blocks.
And players can get that item, but they will loose it after seconds...
I set timer to 5 seconds. You can make less or more
I hope, I helped someone
I had one problem on my FTB Ultimate server. I had to ban Mining Lasers and all other stuff, which can pass throught region protections. I used a lot of different plugins, and guess what? Nothing helped. But after a day of intensive thinking I found out one thing, how to ban thos nasty items.
So this is kind of tutorial
STEP 1. Enable command block on your server
Code:
enable-command-block=false
Code:
enable-command-block=true
STEP 2. Launch your server
STEP 3. Make a room somewhere below spawn and put there Timer (Item/Block from RedPower) put some command blocks, and type text like this in them:
Code:
clear @a ITEMID
And players can get that item, but they will loose it after seconds...
I set timer to 5 seconds. You can make less or more
I hope, I helped someone