JusticeTech System

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What do you want me to teach next Please don't drop what i can't teach Lol

It is not a must to answer though 😄

QUESTIONS 1. Why Is Port 80 Used? 2. Why Is Port 443 So Important? Will appreciate your answers

We will stop here for today I don't think anyone, book or videos would teach this better

Final Analogy Think of the internet as a city: 🌍 Internet = The city 🏠 IP Address = Your house address 🚪 Port = The door or room number 📦 Data = A package 📱 Application = The person waiting in that room Without the correct port, the package reaches the right house but has no idea which room it should be delivered to. That is why ports are essential in computer networking they make sure every piece of data reaches the correct application on your device.

IP Address VS Ports IP Address tells you: Which device? Example: 192.168.1.10 Port tells you: Which application or service on that device? Example: 192.168.1.10:443 This means: Device = 192.168.1.10 Service = Port 443

IP Address VS Ports I have come to understand that many people confuse these or they tend to describe them interchangeably Now this is it

Why Do Hackers Scan Ports? Imagine you're a thief, instead of trying every window, you first check which doors are open before you go in. Hackers do something similar with port scanning. They look for open ports to discover which services are running on a computer. NB: Finding an open port doesn't automatically mean a system can be compromised, but can still be compromised so ensure all exposed services be kept secure and updated.

Do you know why cyber criminals also known has dark hat hackers or unethical hackers scan ports? Alright let me tell you why

Additionally let me give you simple cyber security tips

What Is an Open Port? Imagine your house which has some doors Locked and some Opened An open port means a service is listening for incoming connections. For example: Port 80 If a web server is running, Port 80 is open so browsers can connect. If nothing is using Port 80, it stays closed.

There is thing called an Open Port what does it mean? Let me explain

Can Two Apps Use the Same Port? Usually no because imagine two shops trying to use the exact same shop number in a mall, it would cause confusion. Similarly, if another application is already using a port, a second application usually can't use that same port in the same way at the same time.

At the end i am going to ask 2 basic questions So get ready

This particular table took my time All for the sake of impacting knowledge It's all good Let's go

Common Port Numbers Here are some well-known ports: Port Service What It Does 20 & 21 FTP File transfer 22 SSH Secure remote login 25 SMTP Sending email 53 DNS Converts DN to IP addresses 80 HTTP Normal websites 110 POP3 Receiving email 143 IMAP Email synchronization 443 HTTPS Secure websites 3306 MYSQL Database server 5432 POSTGRESQL Database server 6379 REDIS In-memory data storage

Distracted but i am back... Let's go

I think i cooked with this example 😄😄

Another practical example for those who are still in school Imagine a school that school has one gate, and many students enter through that gate. After entering, they go to: SS1 SS2 SS3 JSS1 JSS2 Now take: The school gate is like the IP address. The classrooms are like ports. The students are like internet data.