I'm running SQL Server in Amazon EC2. I was taking a look at netstat (
netstat -f) to sample the active connections on my local database. Everything looks as I would hope, except for an unexpected entry that appears related to EC2:
(All numbers below are modified so as to protect my actual server info).
Proto Local Address Foreign Address State ... TCP 220.127.116.11:890 domU-12-34-56-78-90-12.compute-3.internal:56789 ESTABLISHED ...
18.104.22.168:890 would be my local database address and port in this case.
Anything.compute-x.internal clearly looks EC2-related. Note that I do not have any CloudWatch alarms or load balancing associated with this server. So the question is-- what is this domU connection and why is it connected to my database?