Port Scanner
Common network port directory and port connectivity reference guide (HTTP, SSH, MySQL, Redis).
How to Use Port Scanner
Search by port number (e.g. 5432, 6379) or service name.
View service name, protocol, and default security recommendations.
Check standard firewall recommendations.
Frequently Asked Questions
Why should database ports not be exposed publicly?
Exposing ports like 3306 or 5432 directly to the Internet exposes databases to automated brute-force attacks.
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