TCP port scanner - identify open services, filtered ports and running protocols. Demonstrates how Nmap-style recon works under the hood.
⚠ Educational simulation only. Always obtain written permission before scanning systems you do not own.
// Configuration
Initialising…
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Open
0
Filtered
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Closed
0s
Time
// How TCP Connect Works
A TCP connect scan attempts a full three-way handshake (SYN → SYN-ACK → ACK). Open ports respond SYN-ACK. Closed ports send RST. Filtered ports produce no response — a firewall is dropping the packets.