Explain what this rule does: alert tcp any any -> 192.168.1.0/24 80 (content:”|A1 CC 35 87|”; msg:”accessing port 80 on local”).

Q1: The following is a dump of a UDP header in binary form 0100 0001 0010 0011 0100 0001 0010 0111 0000 0000 0010 1111 0100 0001 0011 1111 Find in decimal form the following: (a) Source port number (b) Destination port number (c) Total length of the UDP (d) Length of the data (e) Check sum. (5 Marks)

Can anyone help me with basic client-server interaction using TCP sockets in network programming in c code that includes csapp.c and csapp.h. and a text file of the student record that include first name, last name, age, major, and graducation year. The ideas is have 4 choice: Add record, Search Age Range, Search graducation year, and Terminate.    In opition 1, it should collect all the data to the text file, in opition 2, it should search for age range from the text file. in opition 3, it should search the graducation year from the text file and if the year is not there it should print record not found. And opition 4, the client should close the connection and terminate.   studentRecord.txt: John,Doe,24,Computer Science,2023Jane,Doe,22,Mechanical Engineering,2020Charles,Babbage,21,Math,2022George,Bool,25,Math,2023Marie,Curie,26,Chemistry,2023   I know this isn't enough but I want to understand about the client-server interaction using socket interface. So please try to make it simple…

QUESTION 13 Fill the blank With the TCP server, there is a welcoming socket, and each time a client initiates a connection to the server, a new socket is created. Thus, to support n simultaneous connections, the server would need sockets. O n-1 On O n+1 01

Using the following snort rule as a model, write a rule that would detect all the packets shown (1-6): alert tcp any any -> any 80 (msg:"LOCAL my message"; content:"my content"; nocase; sid:1000110; rev:1;) Write a rule which will match all the following: 1. 64.12.10.32:8437 -> 204.126.133.22:80 GET /admin/scripts/setup.php 2. 64.12.10.47:8435 -> 204.126.133.22:80 GET /phpAdmin/Setup.php 3. 64.12.10.2:8439 -> 204.126.133.22:80 GET /php2-1- 10/siteadmin/login.php 4. 64.12.10.18:2173 -> 204.126.133.23:80 POST /admin/scripts/setup.php 5. 64.12.11.2:2174 -> 204.126.133.23:80 GET /php2-1- 10/admin/main/setup.php 6. 64.12.11.2:2176 -> 204.126.133.23:80 GET /ADMIN/PHP/SCRIPTS/login.ph e p Note: Full points are given only if your rule is precise and doesn't generate a lots of false positives. Answer:

I made a TCP server using socket python,basically my server can: - Upload (“put”) request: The client should, at the very least, open (in binary mode) the local file defined on the command line, read its data, send it to the server through the socket, and finally close the connection. - Download (“get”) request: The client should, at the very least, create the local file defined on the command line (in exclusive binary mode), read the data sent by the server, store it in the file, and finally close the connection. To avoid accidents, the client should deny overwriting existing files. - Listing (“list”) request: the client should, at the very least, send an appropriate request message, receive the listing from the server, print it on the screen one file per line, and finally close the connection. I want you to draw an ER diagram that can show the process above please.

Write a rule that will alert on any source IP on any port connecting to any destination IP address on the FTP control port that is referencing the content "Answers.doc". Provide the message of "Bad Student" when this information is found. Use a SID of 1, do not provide spaces in between the parameters delimited by a semicolon, using the order msg, content and sid. An incomplete example of the rule with the correct syntax is: alert tcp any any -> any any (msg: "Test1";sid:1;)

Q.3 In network programming, structs are often used to represent protocol headers due to their ability to neatly encapsulate various types of data. (a) Define a struct named ProtocolHeader with the following fields to mimic a network protocol header: " version (unsigned integer, 4 bits) IHL (Internet Header Length, unsigned integer, 4 bits) typeOfService (unsigned integer, 8 bits) totalLength (unsigned integer, 16 bits) identification (unsigned integer, 16 bits) flags (unsigned integer, 3 bits) fragmentOffset (unsigned integer, 13 bits) timeToLive (unsigned integer, 8 bits) protocol (unsigned integer, 8 bits) headerChecksum (unsigned integer, 16 bits)

C Programming:  Write a program that optionally accepts an address and a port from the command line. If there is no address and port on the command line, it should create a TCP socket and print the address (i.e. server mode). You can choose any port number for your server (>1024). If there is an address and port, it should connect to it (i.e., client mode). Once the connections are set up, each side should enter a loop of receive, print what it received, then send a message. The ping from the client should be sent before entering that loop to start the process. Otherwise both sides will sit and listen without getting anything. The message should be ping from the client and a pong from the server. In order to test this on one machine, you will need to run the same program twice (in two separate terminals). Run first in server mode, then run in client mode using the information printed from the server as your command line arguments. This is the output it must print out: Running…

import socket def authenticate_user(tcp_socket):    while True:        response = tcp_socket.recv(1024).decode()        print(response)        username = input()        tcp_socket.sendall(username.encode())        response = tcp_socket.recv(1024).decode()        print(response)        password = input()        tcp_socket.sendall(password.encode())        auth_response = tcp_socket.recv(1024).decode()        if "successful" in auth_response:            print(auth_response)            return True        else:            print(auth_response) def receive_items(tcp_socket):    while True:        response = tcp_socket.recv(1024).decode()        if "Item List:" in response:            print(response)            while True:                item = tcp_socket.recv(1024).decode()                if not item.strip():                    break                print(item)            break def select_items(tcp_socket):    selected_items = []    while True:        item_id = input("Select item by entering…