Forum OpenACS Development: Re: Blocking access to login based on repetitive hits by ip address?

I agree fully with Jade, but just in case you would want to do this blocking anyway for some reason: don't do it in oacs. Chances are that you're running some flavor of unix and most unices have packetfiltering capabilities (netfilter/iptables on linux, ipfw on bsd, sunscreen lite for solaris). A simple script can tail the fw log or access log and add/delete fw rules based on what it sees. There are some implementations for this concept as well (mostly netfilter/iptables based) - freshmeat/google is your friend.