ip/icmp scanner

Network_and_802.11/scanner/raw_socket.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+
+__author__ = "bt3"
+
+''' A Basic Sniffer'''
+
+import socket
+import os
+
+# DEFINE CONSTANTS
+# host to listen
+HOST = '192.168.1.114'
+
+
+def main(host):
+
+    OS = os.name
+
+    # create a raw socket, binding to the public interface
+    # windows allow us to sniff all incoming packets regardless of protocol,
+    # whereas Linux forces us to specify we are sniffing ICMP
+    if OS == 'nt':
+        socket_prot = socket.IPPROTO_IP
+        sniffing(host, 1, socket_prot)
+
+    else:
+        socket_prot = socket.IPPROTO_ICMP
+        sniffing(host, 0, socket_prot)
+
+
+
+def sniffing(host, win, socket_prot):
+    while 1:
+        sniffer = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket_prot)
+        sniffer.bind((host,0))
+
+        # include the IP headers in the captured packets
+        sniffer.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+
+        # if windows, it needs to send an IOCTL to set to promiscuous mode
+        # we send IOCTL to the network card driver to enable it
+        # promiscuous mode allows us to sniff all packets that the network card sees
+        # even those not destined to the host
+        if win == 1:
+            sniffer.ioctl(socket.SIO_RCVALL, socket_RCVALL_ON)
+
+        # read in a single packet
+        print sniffer.recvfrom(65565)
+
+    if win == 1:
+        sniffer(host, 0, socket_prot)
+
+
+
+if __name__ == '__main__':
+    main(HOST)