Why there suddenly were so many 400 request in my access log?
- by LotusH
Below are little part of my access_log
118.186.8.50 - - [19/Dec/2011:22:42:57 +0800] "-" 400 0 "-" "-"
05
118.186.8.50 - - [19/Dec/2011:22:42:57 +0800] "-" 400 0 "-" "-"
06
118.186.8.50 - - [19/Dec/2011:22:42:57 +0800] "-" 400 0 "-" "-"
07
118.186.8.50 - - [19/Dec/2011:22:42:57 +0800] "-" 400 0 "-" "-"
08
118.186.8.50 - - [19/Dec/2011:22:42:57 +0800] "-" 400 0 "-" "-"
09
220.173.136.39 - - [19/Dec/2011:22:43:22 +0800] "-" 400 0 "-" "-"
10
220.173.136.39 - - [19/Dec/2011:22:43:22 +0800] "-" 400 0 "-" "-"
11
220.173.136.39 - - [19/Dec/2011:22:43:22 +0800] "-" 400 0 "-" "-"
12
220.173.136.39 - - [19/Dec/2011:22:43:22 +0800] "-" 400 0 "-" "-"
13
220.173.136.39 - - [19/Dec/2011:22:43:22 +0800] "-" 400 0 "-" "-"
14
220.173.136.39 - - [19/Dec/2011:22:43:22 +0800] "-" 400 0 "-" "-"
And the volume was very huge, some like one hundred thousand of these 400 request per second. And I'm pretty sure there are no errors on my site in that period of time.(No error report and I didn't change the source code)
