$ ./tools/port-checker
Port Checker
Reference for common TCP/UDP ports. Search by number, service name, or filter by category. Useful for firewall configuration, CTF reconnaissance, and quick recall.
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Note: This is a reference, not a live scanner. Active port scanning of remote hosts requires explicit authorization and a server-side tool — running it from someone else’s browser is unreliable and ethically problematic. For real reconnaissance, use
nmap on a host you own.