We are currently facing frequent server crash due to more number of httpd processes. Earlier we had frequent SYN flooding attacks. We have already enabled SYN cookies and installed both mod_security, mod_evasive.
But now we have more httpd process, which crashes the server frequently. Need to kill the big bunch of httpd process regularly to restart the unresponsive server.
How should we handle the situation? Any suggestions or thoughts would be great help.
Thanks in advance.