write the following iptables on the server to block the following traffic types originated from the attacker to the server: HTTP connection request from the attacker to the server.

What does it mean when an HTTP query has a header field of "Connection: keep-alive"? a. The client can keep the TCP connection open for future requests/responses if this is supported by the server. O b. Use UDP for additional connections to the server. c. Continually send an object from the server to the client until the client has acknowledged receipt of the requested object. O d. Use the QUIC protocol for this connection.

True or False 1. After fast retransmit is invoked, fast recovery cuts the slow start period in half 2. A host sends a segment with a sequence number 35 and a payload of 5 Bytes. The ACK number in that segment is 40 3. TCP segments can only be lost when router queues overflow. Please explain if possible， Thank you!

Please type your solution below for the question.   d. Suppose the hash tables in the two bridges B1 and B2 are all updated.

Question 23 A client's browser sends an HTTP request to a website. The website responds with a handshake and sets up a TCP connection. The connection setup takes 2.1 ms, including the RTT. The browser then sends the request for the website's index file. The index file references 8 additional images, which are to be requested/downloaded by the client's browser. Assuming all other conditions are equal, how much longer would non-persistent HTTP take than persistent HTTP? (Give answer in milliseconds, without units, rounded to one decimal place. For an answer of 0.01005 seconds, you would enter "10.1" without the quotes.)

Please write the steps to set up a server as DHCP server according to the following conditions:   Setting up the Account Server Set the DHCP service onCreate a DHCP pool where:Pool Name: Your Name (Ex: Lionel Messi)Start IP address: Your ID (Ex: 20.22.12.18)

When a web client requests access to a web server's protected resources, show how native authentication and authorization services are used. To solve this problem, it is easiest to look at the following two justifications for layered protocols: Please provide concrete examples to support your arguments.

A single link between two hosts can be used to send more than one file. Please tell me when shipments can be cleared. Is there a set amount of time for one wait and some flexibility with the other?

The packets listed below were received by your network's stateful firewall, and they are shown in the following table in random order. The IP addresses of two hosts in your LAN, IP1 and IP2, and two external hosts, IP3 and IP4, are assumed to be IP1 and IP2, respectively. Indicate the number of established sessions and the number of half-formed sessions by evaluating these packets. established sessions. Packet Direction Pa1 Pa2 Pa3 Pa4 Pa5 раб Pa7 Pa8 Pa9 out Out in Out In in out out In Source IP IP1 IP2 IP3 IP2 IP4 IP4 IP2 IP1 IP4 Dest. IP IP3 IP4 IP1 IP4 O None of them IP2 IP2 IP4 IP3 IP2 Source Dest. Port Port 23 X 25 23 25 y y 80 X n y X y 25 25 n 23 80 SYN 1 1 1 0 1 0 1 0 1 ACK 0 1 1 1 0 1 1 1 0 O The number of established sessions=2 & The number of half established sessions = 1 The number of established sessions=0 & The number of half established sessions - 3 O The number of established sessions 2 & The number of half established sessions = 2 O The number of established…