Whitelisting IPs for OPML server running on EC2 instance?

[Mark]

Maybe this is normal, but I've noticed that for my River2 setup running on an EC2 instance and dumping into an S3 bucket, I am now up to 3.8 million I/Os for Amazon EC2 EBS activity, which is above the 2mil threshold on the free tier. This occurred just over the last week it's been running.

I just changed the security settings for RDP to allow access only from my IP according to this doc:

http://cloud-computing.learningtree.com/2010/09/24/understanding-amazon-ec2-security-groups-and-firewalls/

Is the EC2 instance getting hammered by port scans? Should I add a robots.txt and whitelist IPs for the http ports?

[Frank McPherson]

I think the EBS activity is basically read/write to what the virtual machine considers to be local disk. I have an instance that has been up for 580 hours that hast 24+ million I/Os. The only thing you can do to decrease those I/Os is to control the read/writing to disk. I believe that River2 stores information locally and then copies that to S3, so an increase in the amount of feeds being scanned or the frequency of the scans is likely to increase the EBS I/Os. 

I doubt that doing anything to network ports is going to change the EBS activity. 

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