I already talked to you about this Requiem, so just in case you forgot : you want to rent one of
these, plug it in the WAN port of your load balancer/router/wathever, and start crashing your server.
There are also free software that do the same thing, but will give you less performances/connections/transactions per seconds ; but it's free, and if your servers are not too powerful, that might be enough. I believe the Apache foundation has got one.
