Hi all, Thanks in advance for the help. I'm working on doing performance testing for apache 2.2 with Ubuntu 10.04 LTS. I've been using a lower amount of concurrent connections(~100) but would like to step it up to 1000's of connections. Using Apache Bench I cannot get the desired number of connections because the server keeps on givnig me a "possible SYN flooding on port 80. Sending Cookies" I'm guessing this is because 1000 clients from the same IP address try to connect at the same time. What can i change to ignore or increase the detection number?