If you were to see the following command run, what would you assume? hping -S-p 25 10.5.16.2 Someone was trying to probe the web port of the target. Someone was trying to identify if SNMP was supported on 10.5.16.2. O Someone had mistyped ping. Someone was trying to probe an email port on the target.

If you were to see the following command run, what would you assume? hping -S-p 25 10.5.16.2 Someone was trying to probe the web port of the target. Someone was trying to identify if SNMP was supported on 10.5.16.2. O Someone had mistyped ping. Someone was trying to probe an email port on the target.

LINUX+ AND LPIC-1 GDE.TO LINUX CERTIF.

5th Edition

ISBN:9781337569798

Author:ECKERT

Publisher:ECKERT

Chapter13: Configuring Network Services And Cloud Technologies

Section: Chapter Questions

Problem 1DE

See similar textbooks

Similar questions

The netstat programme, available for Linux and Windows, provides a list of active network connections. Describe how to use this command to identify whether a web page is not terminating connections or, if connection pooling is being used, is not returning connections to the pool. You may do this by looking at whether or not the connection is being returned to the pool. There is a possibility that connection pooling will not immediately terminate the connection.
For this lab, you will write a shell script called nethelper.sh that: 1. Reads in a list of hosts from a host file that is passed in as a parameter 2. Repeatedly, until the user selects quit (q), ask the user if the user wants to ping a host or look up a hosts DNS name 3. Once the user has selected an action, prompts the user for which host and then applies the action. Note that for the ssh action, the script must also ask the user for the user name that will be used to log into the host. Step 1 To accomplish step 1 above (reading in a list of hosts from a file), you will write a function called read_hosts. Functions in bash scripts have the following syntax: function name { # function body goes here } You can put any bash syntax inside the function as the function body. Also, note that the parameters to a function act like the parameters passed in at the command line. In other words, the parameters to the function are place in variable named $1, $2, and so on. So, how do you read the…
Hello, I am struggling with this assignment. I have a Ubuntu VM built out in AWS and i got a firewall shell script built out and ran on the server. But this instructor calls for testing inbound connection, like web, email, etc. How do I test this if it's just a plain Ubuntu build, no desktop? After that he wants us to modify the script to allow just SSH, HTTP and HTTPS and test those connections TO the machine. How do I do this? Did I set this firewall script up correctly? And how do I test steps 2 and 3 for just a plain jane Ubuntu command line only server? Install and configure a Linux operating system (e.g. Ubuntu, Fedora, Debian) on a virtual machine or physical machine. --> You can use an EC2 instance in AWS or DigitalOcean. Install the iptables firewall tool using the package manager of the Linux operating system you installed in step 1 (e.g. sudo apt-get install iptables for Ubuntu). 1. Create a firewall script that blocks all incoming traffic except for incoming SSH…
An attacker tries to do banner grabbing on a remote web server and executes the following command:$ nmap -sV hackme.com -p 80 He gets the following output:Starting Nmap 7.90 ( http://nmap.org ) at 2020-09-26 22:47 ESTNmap scan report for hackme.com (108.58.137.114)Host is up (0.048s latency).PORT STATE SERVICE VERSION80/tcp open http Apache httpdService detection performed. Please report any incorrect results at http://nmap.org/submit/.Nmap done: 1 IP address (1 host up) scanned in 7.36 seconds What did the hacker accomplish? nmap can’t retrieve the version number of any running remote service. The hacker successfully completed the banner grabbing. The hacker should have used nmap -O host.domain.com. The hacker failed to do banner grabbing as he didn’t get the version of the Apache web server.
Write a script to find and print a "ping sweep"? Use the following code: import os my_ip="192.168.10.103" # sub your ip address os.system('ping -n 4 {}'.format(my_ip))
How would someone go about doing the following? A RedHat9 VM machine is hosted in a structure with the IP address: 10.11.19.12. There is an nweb service on port 7684. You will write an exploit to theintended target. Your exploit will be sent to the target machine and must return a shell to a controller machine at the IP address 10.11.19.11. You will be using a Kali Machines metasploit to do this.
Step 1: Write a script to find and print your local IP address Use the following code: import socket hostname = socket.gethostname() local_ip = socket.gethostbyname(hostname) print(local_ip) Step 2: Write a script to find and print your OS platform and release (for example, "Windows version 10") Use the following code: import platform print(platform.system ()) print(platform.release ()) Step 3: Write a script to find and print a "ping sweep"? Use the following code: import os my_ip="192.168.10.103" # sub your ip address os.system('ping -n 4 {}'.format(my_ip)) Step 4: Write a script to find and print current day and time import time now = time.localtime() print(time.strftime("%m/%d/%Y %I:%M:%S %p", now)) Extra Credit: Add code to Step#4 which prints a greeting, either "good morning", "good afternoon", "or good evening", depending on the current time.
Assume a web server can only receive TCP connections on port 80 (HTTP) and 22 (SSH), but not on any other ports. The web server can only establish connection to a database server hosted on private IP 192.168.100.100 on port 3000, but to no other machines inside or outside the network. Imagine this web server is running Linux, and we’re using iptables to define host-based firewall rules for it. Show the set of iptables commands to install necessary rules for this security policy.
In which of the following applications, UDP is a suitable transport layerprotocol? (a)In SMTP, a user can send a long e-mail message, which may includemultimedia. When a user sends a message, the recipient does not expectto receive a response quickly. (b)A user needs to download a very large text file from the internet. Theuser doesn’t want part of the file to be missing or corrupted when he/sheopens the file. The delay created between the delivery of the parts arenot an overriding concern for him. (c)In DNS, a client needs to send a short request to a server and to receive a quick response from it. The request and response can each fit in one userdatagram.
On servers with Linux operating system, access logs are kept under which of the following directories by default?A) /var/log/B) /var/log/auth/C)/log/D)/log/auth/ Which of the following would an attacker prefer to run operating system-level code with MSSQL?A) MSSQL cannot run code at the operating system level.B) MSSQL agentC) xp_cmdshellD) There are no options. As a network administrator, you want to reduce the attack surface on your systems. Which of the following helps?A) Creating shared folderB) Make sure that only the necessary services are activeC) To record access activitiesD) monitor network traffic Which of the following products can an institution prefer to use if its antivirus software is up-to-date on the computers in its network?A) FirewallB) DLPC) Web ProxyD) NAC When John enters the mobile banking app on his smartphone, he sees his account balance is decreasing. What would it be better for John to do first to fix this situation?A) Closing and reopening the mobile…
Assume that our LastPass web server is configured to use port 7777 rather than the default HTTP port. Also assume that two users on the website, X and Y, are using their home computers to visit the web server at the same time. Are all of the requests from X’s computerand Y’s computer being sent to the same socket at the web server? If yes, how does the webserver distinguish the requests from different clients? If not, do the different sockets both have port 7777? Why? Assume that the LastPass web server uses persistent connections.
1. Persistent HTTP requires?a. 2(round trip times) + file transmission timeb. as little as two RTT for all the referenced objectsc. one file transmission timed. as little as one RTT for all the referenced objects 2. UDP has no connection between client & server?a. RCVR extracts sender IP address and portb. sender explicitly attaches IP destination address and portc. three other answers are incorrectd. no handshaking before sending data 3. A socket in computer networks is correctly defined as?a. A combination of IP address and port number, connected by a "/" symbolb. sender explicitly attaches IP destination address and portc. RCVR extracts from the socket, sender IP address and portd. A combination of IP address and port number, connected by a"." symbol 4. The data link layer provides?a. the functional and procedural means to transfer data between network entities and the means to detect and possibly correct errors that may occur in the link layer.b. the functional and procedural…