Add knock python software

knock

@@ -0,0 +1,39 @@
+#!/usr/bin/python3
+## From: https://gist.github.com/rootsploit/db83a6975c7c1337106950b81b6df733/
+
+import socket
+import itertools
+import sys
+import time
+import argparse
+
+class Knockit(object):
+    def __init__(self, args: list):
+        self._parse_args(args)
+
+    def _parse_args(self, args: list):
+        parser = argparse.ArgumentParser()
+        parser.add_argument('-d', '--delay', type=int, default=200,
+                            help='Delay between each knock. Default is 200 ms.')
+        parser.add_argument('host', help='Hostname or IP address of the host.')
+        parser.add_argument('ports', type=int, help='Port(s) to knock on', nargs='+')
+
+        args = parser.parse_args(args)
+        self.delay = args.delay / 1000
+        self.ports = args.ports
+        self.host= args.host
+
+
+    def knockit(self):
+        self.ports = list(map(int, self.ports))
+
+        for port in self.ports:
+            print("[+] Knocking on port %s:%s" % (self.host,port))
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            sock.settimeout(self.delay)
+            sock.connect_ex((self.host, port))
+            sock.close()
+
+
+if __name__ == '__main__':
+    Knockit(sys.argv[1:]).knockit()