What is the first valid host on the subnetwork that the node 172.16.70.237/28 belongs to?
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What is the first valid host on the subnetwork that the node 172.16.70.237/28 belongs to?
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- What is the last valid host on the subnetwork that the node 192.166.6.66/26 belongs to?Assume that there is a system call connect). This system call takes an IP address as an argument and then creates a TCP connection with that IP address. For example, connect(10.10.10.10) will create a TCP connection with the machine that has the IP address 10.10.10.10. Now, imagine that for the ptrace sandbox, the connect() system call is blocked for a known bad IP address 20.20.20.20. However, the attacker wants to connect to this blocked IP address (the attacker wants a TCP connection to 20.20.20.20, which is not allowed in the policy). It is also given that the connect() system call is allowed for the IP address 1.1.1.1. What can the attacker do to bypass this restriction and trick the ptrace sandbox (and the Operating System) Into running the connect() system call with the argument 20.20.20.207The server-side communication socket is supported by ServerSocket class in java.net package. After connection is established it uses Socket class to communicate with client. Write a complete Java program to implement Transmission Control Protocol (UDP) client and server.
- 2- Client is connecting a server via TCP to get an object from HTTP Server. Skitch the TCPwindow connection including (establishing connection, the request from client, the response byserver, sending data from server side and closing the connection).Knowing that:1- Get request from the HTTP 1.1 server is 259 bytes.2- Response from the server is 223 bytes.3- Data size requested is 900 bytes.Write down a full UDP client script (Python3) that will: 1- Receive a string as input from the user. 2- Send only the user input string to a UDP server with 10.11.6.27 as the IP address-and 49788 as the port number. 3- Wait for a message from the server. If the received message ends with "goodbye", print out only the last ten characters from the message and quit the script. Otherwise, just quit without printing any message. Use the editor to format your answerimport 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…
- What is the HOL blocking issue in HTTP/1.1? How does HTTP/2 attempt to solve it?Type a client script that establishes a TCP connection with a server, and then it sends a message with the client user name to the server. After that, it receives a message from the server. The client should print out the received message. Assume that the server uses port number 51234 and is located at a machine with an IP address "192.168.200.9". Use the editor to format your answerSMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts over Transmission Control Protocol (TCP). A TCP connection is set up between a user agent and a server program. The server listens on TCP port 25 for incoming connection requests. The user end of the connection is on a TCP port number above 1023. Suppose you wish to build a packet filter rule set allowing inbound and outbound SMTP traffic. You generate the following rule set: Rule Direction Src Addr Dest Addr Protocol Dest Port Action A In External Internal TCP 25 Permit B Out Internal External TCP > 1023 Permit C Out Internal External TCP 25 Permit D In External Internal TCP > 1023 Permit E Either Any Any Any Any Deny Describe the effect of each rule.
- SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts over Transmission Control Protocol (TCP). A TCP connection is set up between a user agent and a server program. The server listens on TCP port 25 for incoming connection requests. The user end of the connection is on a TCP port number above 1023. Suppose you wish to build a packet filter rule set allowing inbound and outbound SMTP traffic. You generate the following rule set: Rule Direction Src Addr Dest Addr Protocol Dest Port Action A B C D E In Out Out In Either External Internal Internal External Internal External Any External Internal Any TCP TCP TCP TCP Any 25 > 1023 25 > 1023 Permit Permit Permit Permit Any Deny Someone from the outside world (10.1.2.3) attempts to open a connection from port 5150 on a remote host to the Web proxy server on port 8080 on one of your local hosts (172.16.3.4), in order to carry out an attack. Typical packets are as follows: Scenario Direction 3 4 In…In the HTTP protocol, what is the primary different between a GET request and a PUT request? GET requests send out TCP packets whereas PUT requests send out UDP packets. O GET requests are for HTML (and CSS/JavaScript) source files only while PUT requests are for other objects such as images, audio, and video. O GET requests place parameters into the URL while PUT requests place parameters in the HTTP request body. O GET requests are for downloading data and PUT requests are for uploading data.1. It is a protocol for encapsulating data packets that use one routing protocol inside the packets of another protocol. 2. It is a hash function that has been deprecated for uses other than as a non-cryptographic checksum to verify data integrity and detect unintentional data corruption. 3. An algorithm which is a pseudorandom function family in that it can easily generate arbitrary portions of the keystream without having to start from the beginning. 4. What is the most popular and widely implemented flavor of STP? 5. An algorithm that comprises of a series of linked operations, some of which involve replacing inputs by specific outputs (substitutions) and others involve shuffling bits around (permutations). 6. It is calculated using port cost values associated with port speeds for each switch port along a given path in STP 7. A proprietary architecture that authenticates users and devices using the identity-enabled network approach, and enables the government workforce to connect…
