Plugin Title Open SMTP
Cloud AWS
Category EC2
Description Determine if TCP port 25 for SMTP is open to the public
More Info While some ports such as HTTP and HTTPS are required to be open to the public to function properly, more sensitive services such as SMTP should be restricted to known IP addresses.
AWS Link http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/authorizing-access-to-an-instance.html
Recommended Action Restrict TCP port 25 to known IP addresses


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