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Forum Moderators: rogerd
It's been posted in here before, but I can't remember where the post was, so I just copied it from my bookmarks.
Be careful with BlackHole lists, you can end up banning some legit users. And some of the IP's are a little to all-encompassing.
On forums I admin or mod at, I just keep on top of it and delete posts pretty much as fast they come in.
I think I'll be doing the following, and Rogerd has a good point there: I'll just try to make those people get fed up by letting them sign up again, block e-mailadresses, IP-addresses. We maintain a list with all IP's a member has logged in with in the last couple of weeks. We could just block them all, including the anonymous proxies they used the last couple of days.
Another thing I'm testing right now is the use of a random and never expiring cookie. Just in case someone happened to be so stupid as not to clear his cookies before signing up again. We could just automatically ban them using this 'machine ID'.
Of course, there's always a risk of false positives. But I think we shouldn't exaggerate that issue, what are the chances in these days of (semi-)static IP addresses, that someone re-uses a previously banned IP address?
what are the chances in these days of (semi-)static IP addresses, that someone re-uses a previously banned IP address?
Fairly high, depending on your clientele. On one forum I get a lot of posts from students, and they often share an IP in their dorm, etc. Ban the IP of one problem poster and you take out the whole building...