This is an ongoing post, in which I record the IP addresses I had to ban on this server because of serious abuse/spam. I am posting this mostly so that I have a backup in case I reboot the server – but I sense that more people will find this list useful.
The following is the output of iptables -L -n on this server. Updates as required. Each IP address in this list has submitted more than 1000 requests for comments in RSGallery within a single day. The IP addresses and the servers behind them may be perfectly innocent, but in each case, the ban resulted in a sudden drop of comments. Also note that the comment feature has been disabled on this blog.
Chain INPUT (policy ACCEPT)
target prot opt source destination
DROP all -- 126.96.36.199 0.0.0.0/0
DROP all -- 188.8.131.52 0.0.0.0/0
DROP all -- 184.108.40.206 0.0.0.0/0
DROP all -- 220.127.116.11/16 0.0.0.0/0
DROP all -- 18.104.22.168 0.0.0.0/0
DROP all -- 22.214.171.124 0.0.0.0/0