hello again! jeje
well, I've been watching the logs again and the report of Logwatch, now with nginx as reverse proxy in front of apache I have in one hour 441 "NULL 400 Bad Requests" made by 45 ips aprox
example:
17 connections: same ip, same second
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
IP _ - [01/Oct/2009:09:44:40 +0200] "-" 400 0 "-" "-" "-"
These amounts are normal with nginx?
how can I know the causes of this?
What can I do?
thanks!! thanks!! thanks!!