import socket
import subprocess
import sys
from datetime import datetime
subprocess.call('clear', shell=True)
remoteServer    = socket.gethostname()
remoteServerIP  = socket.gethostbyname(remoteServer)
print "Please wait, scanning remote host", remoteServerIP
print "-" * 60
t1 = datetime.now()
try:
    for port in range(1,1025):
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        result = sock.connect_ex((remoteServerIP, port))
        if result == 0:
            print "Port {}:   Open".format(port)
        sock.close()

except KeyboardInterrupt:
    print "You pressed Ctrl+C"
    sys.exit()

except socket.gaierror:
    print 'Hostname could not be resolved. Exiting'
    sys.exit()

except socket.error:
    print "Couldn't connect to server"
    sys.exit()

t2 = datetime.now()
total =  t2 - t1
print 'Scanning Completed in: ', total