Running the Bitnami Networked WorkPress instance on Amazon EC2. Every day at about the same time we are getting a 20MB inbound network hit.
Size: It is a slightly different size in bytes each day, but roughly looks like 20MB. Time: Arrives neatly at either 6:30:00, 6:35:00 or 6:40:00 UTC each day. Only once per day.
I can see it in the EC2 Inbound Network chart, but cannot see it in the HTTP Logs and that is basically all that is open from an inbound FW perspective.
There is no obvious CPU, or outbound network hit at the same time.
Wondering if it is some type of automated software update check. Had a quick scan through crontab, but cannot see any jobs scheduled for that time.
Welcome suggestions on where else to look.