Spamhaus DROP (Don't Route Or Peer)

I came across this interesting Spamhaus DROP (Don't Route Or Peer) list.

Quote:
When implemented at a network or ISP's 'core routers', DROP will protect all the network's users from spamming, scanning, harvesting and dDoS attacks originating on rogue netblocks.

I added this to my 'Blocked Sites...'. You can do this to:

1. Download the list.
2. Remove everything except the netblocks and save the file as a text file.
3. Go to 'Intrusion prevention' --> 'Blocked Sites...' and click on 'Import...'
4. Select your saved file and save the new configuration to your firebox.

You can do this every month because:

Quote:
The DROP list changes quite slowly.