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import socket def simple_port_scanner(target, start_port=1, end_port=100, max_ports=50): if end_port - start_port > max_ports: print(f"Error: Trying to scan too many ports! (Max {max_ports})") return if end_port > 65535: print("Error: Ports can't be higher than 65535") return print(f"Scanning {target} (ports {start_port}-{end_port})...") open_ports = [] for port in range(start_port, end_port + 1): try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(0.5) result = s.connect_ex((target, port)) if result == 0: print(f"Port {port}: OPEN") open_ports.append(port) s.close() except KeyboardInterrupt: print("\nScan stopped by user") break except socket.error: print(f"Port {port}: Error occurred") print("\nScan complete!") if open_ports: print("Open ports found:", ", ".join(map(str, open_ports))) else: print("No open ports found in this range") if __name__ == "__main__": print("=== Simple Port Scanner ===") print("(For educational purposes only)\n") target = input("Enter target IP or hostname: ") start = int(input("Start port (default 1): ") or 1) end = int(input("End port (default 100): ") or 100) simple_port_scanner(target, start, end)
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