How about mod_bandwidth to limit by number of connections and/or bandwidth used per IP etc. For example as a rough set and forget configuration, set it so the maximum anyone can suck out of your server is one quarter of your maximum connections and bandwidth.
http://www.cohprog.com/v3/bandwidth/intro-en.html Regards, Jon On Sunday 14 August 2005 09:19, Sean Conner wrote: > It was thus said that the Great Maxim Vexler once stated: > > > > What can be done to stop the "attack" ? > > > > > > It's pretty easy to stop this under Linux (this may work under other > > > Unix flavors if you adjust the command accordingly), by doing, as root: > > > #GenericRootUnixPrompt> route add -host <ip.address.of.attacker> reject > > > This will cause Linux to ignore any packets from the given IP address > > > (if it doesn't work, try "route add <ip.address> netmask > > > 255.255.255.255 reject"). -spc > > > > Sean, thank you for the quick replay. > > Don't you think that a complete block on the client's IP is a too rush > > tactic? It's a legitimate user, his only fault was that he used this > > spidering tool, which had the side effect of DoS on the httpd daemon, I > > honestly don't think the client meant this to occur. > > It depends upon who you talk to; some admins I know would consider that > being too leinient. But as a stop-gag measure to keep your server up it's > not that bad, and you can always remove the block just as easily ("route > del <ip.address> reject") once it's been resolved). > > > I would like to note that I'm looking for some kind of automatic tool > > to fight this. > > Maybe a mod for Apache that could reject the client at the httpd > > daemon level on a time based period? the logic behind this is that > > this machine is not frequently monitored and I would prefer some kind > > of automatic solution. > > I know of some people that have a process monitoring the log files and if > something hits too fast (or hits something it shouldn't hit) the log > monitoring process will block the IP address, either by adding it to the > Apache configuration or by the method I described. I know such programs > exist, but I've never used them so I can't help you there. > > -spc > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: [EMAIL PROTECTED] > " from the digest: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] " from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
