I looked at the bandwidth utilization on my "theplanet" management tools yesterday.
- Before November it was an average of 20GB per month.
- After November it is an average of 140GB per month!
The traffic of my website has not increased (I checked Google Analytics). All the increased bandwidth is INBOUND bandwidth.
I did a
vnstat -l and it appear that I'm receiving something of about 12MiB every 10 minutes.
How can I know what it is, where it is and from where it is coming from?
The server is on Centos.
How can I do a simple sniff of the traffic?
There is an FTP server but I looked at the log
vi /var/log/xferlog and nothing is weird in the log.
No email are hosted on the server (how can i verify that to be sure?).
You can see that starting at the end of W48, the bandwidth from internet become crazy...