Aye, I'm trying to figure out iptables right now. I just figured if there were wildcards, it would be a quick fix until I can be reasonable sure I have my iptables script where I want it.
I did, with *.*.*.* in the ip_blacklists file but I was still able to access DirectAdmin. I didn't want to mess with it too much without have an idea of what I was trying to enter, so I thought I'd ask here.
At this time, it's just the exact IPs.
Wildcards/netmasks don't work.
There have been requests for a wildcard method, which we will look into.
This also applies to the BFM's skip list option.