What Type Of Concret Do You Use To Repair Prwe3formed Front Steps?
Tryhackme Pre Security Walk-Through- Network Fundamentals
Network Fundamentals
Job ane
1.What is Networking?
Networks are but things connected. For example, your friendship circle: you are all continued because of like interests, hobbies, skills and sorts.
Networks tin can be found in all walks of life:
- A city's public transportation system
- Infrastructure such every bit the national power grid for electricity
- Meeting and greeting your neighbours
- Postal systems for sending letters and parcels
But more specifically, in calculating, networking is the same idea, just dispersed to technological devices. Take your phone equally an instance; the reason that yous have information technology is to access things. Nosotros'll comprehend how these devices communicate with each other and the rules that follow.
In computing, a network can be formed past anywhere from 2 devices to billions. These devices include everything from your laptop and phone to security cameras, traffic lights and even farming!
Networks are integrated into our everyday life. Exist it gathering data for the weather, delivering electricity to homes or even determining who has the correct of fashion at a road. Because networks are then embedded in the modern-day, networking is an essential concept to grasp in cybersecurity.
Take the diagram below as an case, Alice, Bob and Jim accept formed their network! Nosotros'll come onto this a fleck later on.
What is the key term for devices that are connected together?
Ans: Network
2.What is the Internet?
The Internet, sometimes called simply "the Internet," is a worldwide system of computer networks — a network of networks in which users at any one figurer tin can, if they have permission, go information from any other computer .
Who invented the Www?
Ans: Tim Berners-Lee
3.Identifying Devices on a Network
Devices on a network are very similar to humans in the fact that we have two ways of being identified:
- Our Proper name
- Our Fingerprints
Now we tin can alter our proper name through act poll, but we can't, however, change our fingerprints. Every human has an individual ready of fingerprints which means that even if they modify their name, there is still an identity behind information technology. Devices have the same matter: two means of identification, with one being permeable. These are:
- An IP Accost
- A Media Access Command (MAC) Address — retrieve of this as being similar to a serial number.
What does the term "IP" represent?
Ans:Cyberspace ProtocolWhat is each section of an IP address called?
Ans:OctetHow many sections (in digits) does an IP accost accept?
Ans:4What does the term "MAC" represent?
Ans:Media Access Command
Deploy the interactive lab using the "View Site" push button and spoof your MAC address to admission the site. What is the flag?
Ans: Afterward Spoofing the mac accost you will become the flag which is the ans of this question. To spoof MAC make a both device same MAC address.
Task four. Ping (ICMP)
Ping is 1 of the most key network tools bachelor to us. Ping uses ICMP (Internet Control Message Protocol) packets to determine the functioning of a connection betwixt devices, for example, if the connection exists or is reliable.
What protocol does ping utilize?
Ans: PingWhat is the syntax to ping 10.x.10.10?
Ans: Ping 10.x.10.tenWhat flag do you get when you ping 8.8.8.8?
Ans: Ping 8.8.8.8 look towards the output you volition get the flag which start from THM{}.
Chapter 2 Intro to Lan
Task 1
Introducing LAN Topologies
What does LAN stand for?
Ans: Local Area NetworkWhat is the verb given to the job that Routers perform?
Ans: RoutingWhat technology do Switches use to intermission big pieces of data into smaller, more manageable packets?
Ans:Packet SwitchingWhat topology is cost-efficient to gear up?
Ans:Bus TopologyWhat topology is expensive to set up up and maintain?
Ans:Star Topology
Complete the interactive lab attached to this task. What is the flag given at the end?
Ans:THM{TOPOLOGY_FLAWS}
Chore 2
A Primer on Subnetting
What is the technical term for dividing a network upwardly into smaller pieces?
Ans:SubnettingHow many $.25 are in a subnet mask?
Ans:xxxWhat is the range of a section (octet) of a subnet mask?
Ans:0–255What accost is used to identify the offset of a network?
Ans:Network AddressWhat address is used to place devices within a network?
Ans:Host AccostWhat is the proper noun used to identify the device responsible for sending data to another network?
Ans:Default Gateway
Chore ii
The ARP Protocol
What does ARP stand for?
Ans:Address Resolution ProtocolWhat category of ARP Packet asks a device whether or not information technology has a specific IP accost?
Ans:RequestWhat accost is used every bit a physical identifier for a device on a network?
Ans:MAC AddressWhat accost is used as a logical identifier for a device on a network?
Ans:IP Address
Task 4
The DHCP Protocol
What type of DHCP package is used by a device to recall an IP address?
Ans:DHCP DiscoverWhat type of DHCP packet does a device send in one case it has been offered an IP address by the DHCP server?
Ans:DHCP RequestFinally, what is the last DHCP parcel that is sent to a device from a DHCP server?
Ans:DHCP ACK
Affiliate three
OSI Model
Job 1 What is the OSI Model?
What does the "OSI" in "OSI Model" stand up for?
Ans:Open up Systems InterconnectionHow many layers (in digits) does the OSI model have?
Ans:7What is the central term for when pieces of information get added to information?
Ans: Encapsulation
Task 2 Layer seven — Awarding
What is the name of this Layer?
Ans:ApplicationWhat is the technical term that is given to the proper name of the software that users collaborate with?
Ans: Graphical User Interface
Taks iii Layer 6 — Presentation
What is the name of this Layer?
Ans: PresentationWhat is the main purpose that this Layer acts as?
Ans:Translator
Task 4 Layer 5 — Session
What is the name of this Layer?
Ans:SessionWhat is the technical term for when a connexion is successfully established?
Ans:SessionWhat is the technical term for "small chunks of data"?
Ans:Packets
Task 5 Layer 4 — Transport
What is the name of this Layer?
Ans: ShipWhat does TCP stand up for?
Ans: Transmission Control ProtocolWhat does UDP correspond?
Ans:User Datagram ProtocolWhat protocol guarantees the accuracy of information?
Ans:TCPWhat protocol doesn't care if information is received or not by the other device?
Ans: UDPWhat protocol would an application such as an email client use?
Ans:TCPWhat protocol would an application that downloads files use?
Ans: TCPWhat protocol would an application that streams video utilise?
Ans:UDP
Task 6 Layer 3 — Network
What is the name of this Layer?
Ans:NetworkWill packets take the nearly optimal route across a network? (Y/N)
Ans:YWhat does the acronym "OSPF" stand for?
Ans:Open Shortest Path StartWhat does the acronym "RIP" stand for?
Ans: Routing Information ProtocolWhat type of addresses are dealt with at this layer?
Ans:IP Addresses
Chore 7 Layer 2 — Data Link
What is the name of this Layer?
Ans: Data LinkWhat is the name of the slice of hardware that all networked devices come with?
Ans:Network Interface Card
Task 8 Layer 1 — Physical
What is the name of this Layer?
Ans: PhysicalWhat is the name of the numbering system that is both 0'due south and one's?
Ans: BinaryWhat is the name of the cables that are used to connect devices?
Ans: Ethernet Cables
Task 9 Applied — OSI Game
Escape the dungeon to retrieve the flag. What is the flag?
Ans: Use your cursor keys to move left and correct and the space bar to enter doors enter with the Layer wise footstep by footstep. You will go the flag look like THM{}
Chapter Packets & Frames
Chore 1 What are Packets and Frames
What is the name for a piece of data when information technology does take IP addressing data?
Ans:FrameWhat is the name for a piece of data when information technology does not have IP addressing information?
Ans:Packet
Chore 2 TCP/IP (The Iii-Way Handshake)
What is the header in a TCP packet that ensures the integrity of data?
Ans:checksumProvide the social club of a normal Three-fashion handshake (with each stride separated past a comma)
Ans:SYN,SYN/ACK,ACKTask iii Practical — Handshake
What is the value of the flag given at the stop of the conversation?
Ans: View the site and than Click SYN,SYN/ACK,ACK,DATA,ACK,FIN/ACK,FIN/ACK,ACK to become the flag that was the respond.Task 4 UDP/IP
What does the term "UDP" stand for?
Ans:User Datagram ProtocolWhat type of connection is "UDP"?
Ans:statelessWhat protocol would y'all utilise to transfer a file?
Ans:TCPWhat protocol would you lot use to accept a video call?
Ans:UDP
Task 5 Ports 101 (Applied)
What is the flag received from the challenge?
Ans: Click on View Site and Type IP Address viii.eight.viii.8 and Port 1234.Click on Connect the flag is display starting from THM{}.
Chapter 5
Job ane Introduction to Port Forwarding
What is the proper name of the device that is used to configure port forwarding?
Ans: Router
Task 2 Firewalls 101
What layers of the OSI model do firewalls operate at?
Ans:Layer 3,Layer ivWhat category of firewall inspects the entire connection?
Ans:StatefulWhat category of firewall inspects individual packets?
Ans:StatelessTask 3 Practical — Firewall
What is the flag?
Ans: Click on View Site
Setup the Source IP 198.51.100.34
Destination IP 203.0.101.1
Port 80
Action : Drop ,Click on Add together Rule wait 30sec you will go the flag.
Task 4 VPN Basics
What VPN engineering only encrypts & provides the authentication of data?
Ans:PPPWhat VPN applied science uses the IP framework?
Ans:IPSec
Job 5 LAN Networking Devices
What is the verb for the action that a router does?
Ans: RoutingWhat are the two different layers of switches? Split up these by a comma I.e.: LayerX, LayerY?
Ans:Layer2,Layer3
End of Network Primal Path.
Ping me Instagram.
Adjacent. Module
Source: https://febrero.medium.com/tryhackme-pre-security-walk-through-network-fundamentals-24f6136e89f4
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