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Showing posts from August, 2010

Secure your rackspace cloud server

OK, so I've went round and round trying to figure out how my rackspace server was compromised and have come to the conclusion it was an inside job, but nobody's fessing up. I can see what sort of package was used to compromise my box and I may come back to trying to poison that package, but there isn't enough time in my life to continue to school folks who are hell bent on screwing with other people's property. Instead, I'll give folks a quick primer one how to have a little better security if you choose to use rackspace with ubuntu 10.04. #1 make sure your rackspace console password is secure... some basic rules: 10 chars, no dictionary words, upper and lower case letter, 2 number, at least one special char. #2 Once you get your root password emailed to you, log in via the secure console, and disable both network interfaces. I'm not sure what the 10.* interface is for, I'll figure that out later, but I'm assuming it's some sort of rackspace

Cloud Computing Gotchas part II

I finally had time to site down and actually analyze what happened to my box. It was certainly compromised by a script kiddie, but I'm not 100% sure if it was an inside job or not. In any event, I stored off the broken image and re-imaged the machine back to my "last known good" configuration. I subsequently added the account that I thought was used for the attack setting the password back to what it was when the machine was originally compromised, but limited login to the rssh shell. This has been running for almost a week with no problems now. I've had a couple of sniffs of folks trying to connect to my machine as root, but no solid hits. Some initial observations: First the default install of Ubuntu Server on rackspace's cloud accounts enables root login via ssh. This is very strange now that I think about it. Ubuntu, by default disallows this (for very good reasons ), and I think rackspace should seriously consider a change to their default build.