My Apache server has been overloading and I'm trying to trouble shoot why. In looking into the apache access log I see tons of entries like this:
POST /?CtrlFunc_999999AAAAAAAAAAAAAAAAAAAAAAAA HTTP/1.0
POST /?CtrlFunc_ppppqqqqqqqrrrrrrrsssssssstttt HTTP/1.0
POST /?CtrlFunc_KOUZdilsx27BGKOSXbfkpv05AGKPTX HTTP/1.0
POST /?CtrlFunc_rrsssssstttttuuuuuvvvvvwwwwwwx HTTP/1.0
All from different IP addresses. It seems strange that all these different IP's would all be sending sequential alpha-numeric requests. Is this some type of encoding that I'm not familiar with? I couldn't find out anything about the:
?CtrlFunc
either. There are hundreds of entries like this coming from IP addresses in China, Taiwan, India, Equador, and Spain to name a few. Is this normal behavior? I'm just trying to track down why my apache server gets overloaded every time I turn it on. Maybe there's a more efficient way to look at the server processes, but I haven't found it.