Quick TCP port probe that discovers open services on a host. Useful for inventory checks and spotting exposed management ports. Runs from a workstation (Python) and supports threaded scans for speed. Only use on systems you own or have permission to test.
import socket
target = '192.168.1.1'
ports = [22, 80, 443]
for port in ports:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(1)
result = sock.connect_ex((target, port))
if result == 0:
print(f"Port {port} is OPEN")
else:
print(f"Port {port} is CLOSED")
sock.close()
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