gs-projekt · September 16, 2021 00:48 · Oct 10, 2017
diff --git a/portscanner.py b/portscanner.py
@@ -0,0 +1,50 @@
+import socket
+import subprocess
+import sys
+from datetime import datetime
+
+subprocess.call('cls', shell=True)
+
+# Ask for input
+remoteServer = input("Enter a remote host to scan: ")
+remoteServerIP = socket.gethostbyname(remoteServer)
+
+# Print a nice banner with information on which host we are about to scan
+print ("-" * 60)
+print ("Please wait, scanning remote host", remoteServerIP)
+print ("-" * 60)
+
+# Check what time the scan started
+t1 = datetime.now()
+
+# Using the range function to specify ports (here it will scans all ports
+# between 1 and 1024)
+
+# We also put in some error handling for catching errors
+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()
+
+# Checking the time again
+t2 = datetime.now()
+
+# Calculates the difference of time, to see how long it took to run the script
+total = t2 - t1
+
+# Printing the information to screen
+print ('Scanning Completed in: ', total)
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