from socket import *

if __name__ == '__main__':
	target = raw_input('Enter host to scan: ')
	targetIP = gethostbyname(target)
	print 'Starting scan on host ', targetIP

	#scan reserved ports
	for i in range(20, 1025):
		s = socket(AF_INET, SOCK_STREAM)
		result = s.connect_ex((targetIP, i))
		if(result == 0) :
			print 'Port %d: OPEN' % (i,)
		s.close()