This document discusses socket programming in Python. Socket programming allows for communication between a server and client. The socket module is used to create sockets, with the socket() function specifying the address family and socket type. Common tasks demonstrated include creating a server socket that listens for connections, sending and receiving data between connected client and server sockets, and retrieving the hostname and IP address of a system. Banner grabbing is also discussed as a way to glean information about remote services and versions of running software.

1. IN
PYTHON
LOADING

2. 1
IT IS USED FOR COMMUNICATION BETWEEN
SERVER AND CLIENT
3 SYNTAX OF SOCKET CREATION IS
IN ORDER TO PERFORM SOCKET READING
OPERATION, WE USE SOCKET MODULE IN
PYTHON
2
import socket
s=
socket.socket(socket_family,socket_type,protoc
ol=0)
WHY SOCKET
PROGRAMMING ?

3. Socket_type: This is
either
SOCK_STREAM OR
SOCK_DGRAM
Client
socket
Methods
Server
socket
methods
General
socket
methods
Protocol: This is
usually left out,
defaulting to 0
Socket_family: This
is either AF_UNIX
or AF_INET

4. import socket
s=socket.socket()
host=socket.gethostname()
port=12345
s.bind((host,port))
s.listen(5)
while True:
c,addr=s.accept()
print('Got connection from',addr)
c.send('Thank you for connecting')
c.close()

5. import socket
s=socket.socket()
host=socket.gethostname()
port=12345
s.connect((host,port))
print(s.recv(1024))
s.close()

6. import socket
s=socket.socket(socket.AF_INET,
socket.SOCK_STREAM)
print(s)
server='google.co.in'
port=80
server_ip=socket.gethostbyname(server)
print(server_ip)
request="GET/HTTP/1.1nHost:"+server+"nn"
s.connect((server,port))
s.send(request.encode())
result=s.recv(4096)
print(result)

7. FOR RETRIEVING
HOSTNAME
gethostname()
FOR IP ADDRESS
gethostbyname()
RETRIEVING HOSTNAME
AND IP

8. import socket
hostname=socket.gethostname()
print(hostname)
ip_add=socket.gethostbyname(hostname)
print(ip_add)
socket=socket.gethostbyname("facebook.com")
print(socket)

9. SIMPLE BANNER GRABBING
TO GLEAN INFOMARTION OF A
COMPUTER SYSTEM ON NETWORK AND
ITS SERVICES
ADMINISTRATORS USE THIS FOR
INVENTORY OF SYSTEMS & SERVICES ON
NETWORK
AN INTRUDER CAN USE BANNER
GRABBING TO FIND NETWORK HOSTS
FIND RUNNING VERSIONS OF
APPLICATIONS AND OS WITH KNOWN
EXPLOITS

10. import socket
sock=socket.socket()
ip_add=input("Please enter target ip:")
port=int(input("Please enter target port:“))
sock.connect((ip_add,port))
print(sock.recv(1024))
sock.close()

11. WHAT IS
SCAPY??
1 ARMY KNIFE FOR PERSON WHO KNOW
NETWORKING
2 POWERFUL INTERACTIVE PACKET
MANIPULATION TOOL IN PYTHON
3 IT CAN BE USED AS A LIBRARY IN PYTHON
4 IT RUNS IN LINUX. HOWEVER, ITS API RUNS ON
WINDOWS
5 USEFUL FOR SNUFFING, FLOOD ATTACKS ETC.

12. H
T A K
Y
O U
N