Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.
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|Telnet to SMTP Vulnerability- disable anonymous user||3||36|
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|Exchange 2013 - Transport Rule to Block and Reply with message but don't include Header info||1||17|