Networking Walkthrough — TryHackMe

Learn the basics of networking and network addressing

Link to room: https://www.tryhackme.com/room/bpnetworking (Fig.The Room)

Fig.The Room

This is a free room,consist of 4 task with sub-tasks.This is a easy room.Let’s go ahead and solve.

[TASK 1]: Kinda like a street address, just cooler.

When we are sending a letter or a package to our friend or relative we write from and to address also on it.Just like that when computers are connected in a network and when they send or receives message they use IP (internet protocol) addresses to locate each other in the network.

Ip address are divided into different classes according to their uses

IP Address Classes

5 classes of IP address

Private Address Space

private address space

class D and class E are used for research and military purposes only.

The IP addresses mentioned here are IP v4 addresses,if you check your IP address now you may find something else with hexadecimals,that is because you are using IP v6. If you want to know more about it check this video out: https://youtu.be/8npT9AALbrI

Just including another video about sub netting, seven second sub netting video link :- https://youtu.be/ZxAwQB8TZsM

1.1

How many categories of IPv4 addresses are there?

Ans: 5

1.2

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

Ans: E

1.3

How many private address ranges are there?

Ans: 3

1.4

Which private range is typically used by businesses?

Ans: A

1.5

There are two common default private ranges for home routers, what is the first one?

Ans: 192.168.0.0

1.6

How about the second common private home range?

Ans: 192.168.1.0

1.7

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

Ans: 256

1.8

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

Ans: Network

1.9

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

Ans: Broadcast

1.10

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

Ans: Gateway

1.11

Which address is reserved for testing on individual computers?

Ans: 127.0.0.1

1.12

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.

Ans: 0.0.0.0

[TASK 2]: Binary to Decimal.

To understand how it is done watch: https://youtu.be/iDu6JgdkQ7s

Computer is an electronic device and it can understand only binary language.

Let’s do some binary conversions, for this task we shall use any online binary converter : https://www.rapidtables.com/convert/number/binary-to-decimal.html

2.1

10010010

Ans:146

2.2

0111 0111

Ans: 119

2.3

11111111

Ans: 255

2.4

1100 0101

Ans: 197

2.5

1111 0110

Ans: 246

2.6

0001 0011

Ans:19

2.7

1000 0001

Ans: 129

2.8

0011 0001

Ans: 49

2.9

0111 1000

Ans: 120

2.10

1111 0000

Ans: 240

2.11

0011 1011

Ans: 59

2.12

0000 0111

Ans: 7

[TASK 3]: Decimal to Binary.

To understand how it is done watch : https://youtu.be/88UBoquXmiQ

Note:For the sake of preserving the full octet, pad the front of each answer with the appropriate amount of zeros.

We shall use an online converter for this task: https://www.rapidtables.com/convert/number/decimal-to-binary.html

3.1

Ans: 238

3.2

34

Ans: 00100010

3.3

123

Ans: 01111011

3.4

50

Ans: 00110010

3.5

255

Ans: 11111111

3.6

200

Ans: 11001000

3.7

10

Ans: 00001010

3.8

138

Ans: 10001010

3.9

1

Ans: 00000001

3.10

13

Ans: 00001101

3.11

250

Ans: 11111010

3.12

114

Ans: 01110010

[TASK 4]: Address Class Identification.

Use the chart given in the first task to identify the class of these IP address.

4.1

10.240.1.1

Ans: A

4.2

150.10.15.0

Ans: B

4.3

192.14.2.0

Ans: C

4.4

148.17.9.1

Ans: B

4.5

193.42.1.1

Ans: C

4.6

126.8.156.0

Ans: A

4.7

220.200.23.1

Ans: C

4.8

230.230.45.58

Ans: D

4.9

177.100.18.4

Ans: B

4.10

119.18.45.0

Ans: A

4.11

117.89.56.45

Ans: A

4.12

215.45.45.0

Ans: C

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Mr Carlo

Mr Carlo

I'm just curious about cyber security