Type: Walkthrough
Difficulty: Info
Tags: -
Meta Tags: Walkthrough, Walk-through, Write-up, Writeup
Subscription type: Free
Description:
Begin learning the fundamentals of computer networking in this bite-sized and interactive module.
Room link: https://tryhackme.com/room/whatisnetworking
Networks are simply things connected. Networks can be found in all walks of life:
- A city's public transportation system
- Infrastructure such as the national power grid for electricity
- Meeting and greeting your neighbours
- Postal systems for sending letters and parcels
Answer: Network
The first iteration of the Internet was within the ARPANET project in the late 1960s. This project was funded
by the United States Defence Department and was the first documented network in action. However, it wasn't
until 1989 when the Internet as we know it was invented by Tim Berners-Lee by the creation of the World Wide
Web (WWW). It wasn't until this point that the Internet started to be used as a repository for storing and
sharing information, just like it is today.
Answer: Tim Berners-Lee
An IP address (or Internet Protocol) address can be used as a way of identifying a host on a network for a
period of time.
An IP address is a set of numbers that are divided into four octets, such as 192.168.101.42.
Devices on a network will all have a physical network interface, which is a microchip board found on the
device's motherboard. This network interface is assigned a unique address at the factory it was built at,
called a MAC (Media Access Control) address. The MAC address is a twelve-character hexadecimal number split
into two's and separated by a colon.
Answer: Internet Protocol
Answer: Octet
Answer: 4
Answer: Media Access Control
Deploy the interactive lab using the "View Site" button and spoof your MAC address to access the site.
Answer: THM{<REDACTED>}
Ping is one of the most fundamental network tools available to us. Ping uses ICMP (Internet Control Message Protocol) packets to determine the performance of a connection between devices, for example, if the connection exists or is reliable.
The time taken for ICMP packets travelling between devices is measured by ping, such as in the screenshot below. This measuring is done using ICMP's echo packet and then ICMP's echo reply from the target device.
Pings can be performed against devices on a network, such as your home network or resources like websites. This tool can be easily used and comes installed on Operating Systems (OSs) such as Linux and Windows. The syntax to do a simple ping is ping IP address or website.
Answer: ICMP
Answer: ping 10.10.10.10
Answer: THM{<REDACTED>}
Continue your learning by joining the "Intro to LAN" room.
For additional information, please see the references below.