I launched keep launching EC2 instances and for some reason i keep getting this email and then the server amazon shuts the server down...How do i restrict access to the port in question...

here is my email

We have detected that your instance(s):

i-acfadec3

have been behaving in the following way that is against our AWS Customer Agreement:

Port Scanning

Please be aware that in terms of the Web Services License Agreement <http://aws.amazon.com/agreement/> if your instance(s) continue such abusive behavior, your account may be subject to termination.

EC2 has taken the following administrative action(s) against your instance(s):

THROTTLED OUTBOUND PORT 22

It may be possible that you are not hosting this yourself, but your environment may have been compromised by an external attacker. It remains your responsibility to ensure that your instances and all applications are secured against attack. Furthermore, you should:

* Restrict access to specific and required ports and source addresses using the ’ec2-authorize’ command.