Basics of Networking For Beginners | TryHackMe Networking

In this post, I provided all answers to nearly all networking rooms in TryHackMe. Specifically, the below rooms were covered.

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What is Networking?

Intro to LAN

OSI Model

Packets & Frames

Extending Your Network

TryHackMe Networking

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TryHackMe What is Networking

What is the key term for devices that are connected together?
Who invented the World Wide Web?
What does the term “IP” stand for?

What is each section of an IP address called?

How many sections (in digits) does an IP address have?

What does the term “MAC” stand for?

Deploy the interactive lab using the “View Site” button and spoof your MAC address to access the site.  What is the flag?

What protocol does ping use?

What is the syntax to ping 10.10.10.10?

What flag do you get when you ping 8.8.8.8?

TryHackMe Intro To LAN

What does LAN stand for?

What is the verb given to the job that Routers perform?

What device is used to centrally connect multiple devices on the local network and transmit data to the correct location?

What topology is cost-efficient to set up?

What topology is expensive to set up and maintain?

Complete the interactive lab attached to this task. What is the flag given at the end?

What is the technical term for dividing a network up into smaller pieces?

How many bits are in a subnet mask?

What is the range of a section (octet) of a subnet mask?

What address is used to identify the start of a network?

What address is used to identify devices within a network?

What is the name used to identify the device responsible for sending data to another network?

What does ARP stand for?

What category of ARP Packet asks a device whether or not it has a specific IP address?

What address is used as a physical identifier for a device on a network?

What address is used as a logical identifier for a device on a network?

What type of DHCP packet is used by a device to retrieve an IP address?
What type of DHCP packet does a device send once it has been offered an IP address by the DHCP server?

Finally, what is the last DHCP packet that is sent to a device from a DHCP server?

TryHackMe OSI Model

What does the “OSI” in “OSI Model” stand for?
Open Systems Interconnection
How many layers (in digits) does the OSI model have?

7

What is the key term for when pieces of information get added to data?

encapsulation

What is the name of this Layer?

application
What is the technical term that is given to the name of the software that users interact with?

Graphical User Interface

What is the name of this Layer?

presentation

What is the main purpose that this Layer acts as?

translator

What is the name of this Layer?
session
What is the technical term for when a connection is successfully established?

session
What is the technical term for “small chunks of data”?

packets

What is the name of this Layer?

transport
What does TCP stand for?
Transmission Control Protocol
What does UDP stand for?

User Datagram Protocol
What protocol guarantees the accuracy of data?

TCP
What protocol doesn’t care if data is received or not by the other device?

UDP
What protocol would an application such as an email client use?

TCP
What protocol would an application that downloads files use?

TCP
What protocol would an application that streams video use?

UDP

What is the name of this Layer?

Network
Will packets take the most optimal route across a network? (Y/N)
Y
What does the acronym “OSPF” stand for?

Open Shortest Path First
What does the acronym “RIP” stand for?

Routing Information Protocol
What type of addresses are dealt with at this layer?

IP Addresses

What is the name of this Layer?
Data Link
What is the name of the piece of hardware that all networked devices come with?

Network Interface Card

What is the name of this Layer?
Physical
What is the name of the numbering system that is both 0’s and 1’s?

Binary
What is the name of the cables that are used to connect devices?

Ethernet cables

Escape the dungeon to retrieve the flag. What is the flag?
THM{OSI_DUNGEON_ESCAPED}

TryHackMe Packers and Frames

What is the name for a piece of data when it does have IP addressing information?
packet
What is the name for a piece of data when it does not have IP addressing information?

frame

What is the header in a TCP packet that ensures the integrity of data?
checksum
Provide the order of a normal Three-way handshake (with each step separated by a comma)

SYN,SYN/ACK,ACK

What is the value of the flag given at the end of the conversation?
THM{TCP_CHATTER}

What does the term “UDP” stand for?
User Datagram Protocol
What type of connection is “UDP”?

stateless
What protocol would you use to transfer a file?

TCP
What protocol would you use to have a video call?

UDP

What is the flag received from the challenge?
THM{YOU_CONNECTED_TO_A_PORT}

TryHackMe Extending your Network

What is the name of the device that is used to configure port forwarding?
router
What layers of the OSI model do firewalls operate at?
layer 3,layer 4
What category of firewall inspects the entire connection?stateful
What category of firewall inspects individual packets?stateless

Was ist die Flagge?
THM{FIREWALLS_RULE}

What VPN technology only encrypts & provides the authentication of data?
PPP
What VPN technology uses the IP framework?

IPSec

What is the verb for the action that a router does?
routing
What are the two different layers of switches? Separate these by a comma I.e.: LayerX,LayerY

layer2,layer3

What is the flag from the network simulator?
THM{YOU’VE_GOT_DATA}
How many HANDSHAKE entries are there in the Network Log?

5

TryHackMe Networking

How many categories of IPv4 addresses are there?

5
Which type is for research? *Looking for a letter rather than a number here

E
How many private address ranges are there?

3
Which private range is typically used by businesses?

A
There are two common default private ranges for home routers, what is the first one?
192.168.0.0
How about the second common private home range?

192.168.1.0
How many addresses make up a typical class C range? Specifically a /24

256
Of these addresses two are reserved, what is the first addresses typically reserved as?

NETWORK
The very last address in a range is typically reserved as what address type?

broadcast
A third predominant address type is typically reserved for the router, what is the name of this address type?

gateway
Which address is reserved for testing on individual computers?

127.0.0.1
A particularly unique address is reserved for unroutable packets, what is that address? This can also refer to all IPv4 addresses on the local machine.

0.0.0.0

Convert the following binary values into decimal. I suggest doing this by hand with a sheet of paper as it’s essential to practice and retain properly. These have been split into two sections of four for readability, however, treat them as octets when solving for decimal values.

1001 0010

146
0111 0111

119
1111 1111

255
1100 0101

197
1111 0110
246
0001 0011

19
1000 0001

129
0011 0001

49
0111 1000

120
1111 0000

240
0011 1011

59
0000 0111

7

Using the table provided within the previous task convert the following values to binary. For the sake of preserving the full octet, pad the front of each answer with the appropriate amount of zeros.

238

11101110
34

00100010
123

01111011
50

00110010
255

11111111
200

11001000
10

00001010
138

10001010
1

00000001
13

00001101
250

11111010
114

01110010

Using the table provided in the first task, identify which class each of the following addresses belongs to.

10.240.1.1

A
150.10.15.0

B
192.14.2.0

C
148.17.9.1

B
193.42.1.1

C
126.8.156.0

A
220.200.23.1

C
230.230.45.58

D
177.100.18.4

B
119.18.45.0

A
117.89.56.45

A
215.45.45.0

C

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