Basics of hacking a network

The biggest limitation is that there are not enough IP addresses to cover all of the devices that need to connect to the internet. The IPv4 system that we are working with now has only 4. With 7. As a result, a system was developed to reuse a group of IP addresses to be used within a LAN—and are not usable over the internet. These addresses can be used over and over again within each local area network, but not over the internet, thereby conserving the number of IP addresses necessary to keep the world going 'round.

These private addresses include:. You have probably seen the private IP addresses beginning with This is your private IP that is only usable on the local area network. This means that you do not have the same IP address all of the time. Most of the time, these IP address assignments are on a local area network. That device sends that request to the DHCP server that then assigns an IP address to that system for a fixed length of time known as a "lease.

Each time you connect to the LAN, you are likely to receive a different dynamic IP address, but usually in the same range. Network Address Translation NAT is protocol whereby internal private IP addresses are "translated" to an external public IP address that can be routed through the internet to its destination. The NAT device accepts requests to traverse the internet from an internal machine.

It then records that machine's IP address in a table and converts the IP address to the external IP address of the router. When the packet returns from its destination, the NAT device looks into its saved table of the original request and forwards on the packet to the internal IP address of the system that made the original request within the LAN.

When working properly, the individual systems and users don't even realize this translation is taking place. For instance, the diagram above shows two phones with private IP addresses behind a device that is serving as both a NAT device and a router not uncommon. The devices use their private IP addresses within the LAN, but when they want to communicate over the internet, the NAT device translates it to one of the public IP addresses that are unique on the internet.

In this way, the routers along the way know exactly where to send the packets. Ports are a kind of sub-address. The IP address is the primary address and the port is the sub-address. Using a well-worn, but effective metaphor, think of the IP address as the street address of a building and then the port as the apartment number.

I need the street address to get to the right building, but I need the apartment address to find who I am looking for. This is the same with ports. There are 65, 2 raised to the 16th power ports. The first 1, are generally referred to as the "common ports". People obviously don't remember all 65, ports unless they are a savant , or even the 1, most common ports.

We can use a tool such as nmap to see what ports are open on a system. In this way, the security engineer or the hacker can see what ports are open and the services running on the target system. For more Network Basics for Hackers, click here. Also, look for my upcoming book "Network Basics for Hackers". It will an excellent companion for "Linux Basics for Hackers". Networking Basics for Hackers, Part 1. Online Store. Linux Firewalls. Advanced Linux.

Network Basics for Hackers. Scripting for Hackers. Automobile Hacking. Linux Basics for Hackers. Introduction to Snort IDS. Cyber Warrior Training. Metasploit Basics for Hackers. CWA Prep Course. Digital Forensics.

Wi-Fi Hacking. Mobile Hacking. Reverse Engineering Malware. Network Forensics. Training Schedule Course Registration. OTW's New Book. Subscriber PRO. Metasploit Part 1, Getting Started with Metasploit. Part 2, Metasploit Modules. Part 3, Metasploit Payloads. Part 4, Connecting postgresql. Part 5: Recon with Metasploit.

Part 6: Armitage. Part 7, Adding a Module. Part 8, Exploitation with EternalBlue. Part 9, msfvenom for Custom Payloads. Part Pivoting to Control the Network. Part Creating RC Scripts. Part Exploiting Android Devices. Part Updating the msfconsole. Part Post-Exploitation Fun! Part Automobile Hacking. Part AutoSploit. Part Web Delivery for Windows. Part mimikatz. Part Owning with Physical Access. Part Remote Forensics. Part Evasion Modules.

Car Hacking with Metasploit. Metasploit Basics. Metasploit's autopwn. Using Metasploit's psexec. Metasploit Web Delivery for Windows. You will also be able to understand how they can and gain access to your computer. Hacking for beginners' guide on how to hack — Using this book, you'll learn everything you need to know to enter the secretive world of hacking.

It will teach you some fundamental hacking techniques, as well as how to protect yourself and your information. If you really want to become great at hacking, you have to learn to program.

This is a part you can't skip. Even though there are a lot of tools and programs that make it all easy for you, but you also need to know programming. This will lead you to a better position to figure out how they work and what's going on in the background of each language. Needless to say, you can be great at hacking without knowing how to program at all!

But learning it makes it way easier for you to succeed. Don't focus on duration, because every talent in this world has no limit. Start working on it, and don't waste your time in calculating time. It all depends on how bad you want it. It requires knowledge, skills, creativity, and dedication, as well as your time. An excellent tip for your hack attempts to be successful, you should adapt to a successful hacker's mind and start thinking like him.

Everyone can master it and hack like a pro, once you learn it from the fundamentals and build a solid foundation. David Brooke has been working with writing challenged clients for over four years. He provides ghost writing, coaching and ghost editing services.

His educational background in family science and journalism has given him a broad base from which to approach many topics. Welcome to the ultimate guide on how to learn hacking for beginners.

This post is for absolute beginners who qualify for these below: No experience with Cybersecurity hacking Limited experience Those that just can't catch a break I've had my good share of Hats. The darker it is, the more fun you have — MakMan First off, let's start by saying that a career in cybersecurity is kind of like a career in banking.

What is hacking? Let's get to know the terminology. White hat — ethical hacker Black hat — classical hacker, the opposite of the ethical one Grey hat — a mix of the two above, get's unauthorized access but also reveals the weakness to the company Script kiddie — a hacker with no technical skills who just uses pre-made tools Hacktivist — a person who hacks for some idea and leaves a message Feeling overwhelming?

Computer Security and Networks — Coursera [FREE] Free beginners course Course offered by the University of Maryland, which grants you higher credibility By enrolling in this course from Coursera, you'll learn the basics of Software Security and will be able to apply for junior jobs within the area. Skills required The primary skill that is required is to be willing to learn new things on the fly continually or quickly at home.

What is the best way to learn hacking for beginners? This will give you useful information to kick start your journey to become a hacker. Not to mention that the test is 24 hours long. Getting this certification will be a serious effort on your part if you choose to do so. The good thing about OSCP cert is that security firms and organizations widely accept it. Your real test will begin once you start working in the industry. The things you have learned from books and during your certifications can only aid you.

Working in a professional environment and with unmovable deadlines, you will have to think on your feet and constantly prove and improve yourself. After following these steps and more , you can safely say that you have progressed from hacking to becoming an actual hacker. Once you become competent in this space, several opportunities are waiting for you. Cybersecurity professionals are currently and for the foreseeable future will be in high demand. You can choose to be associated with a security firm or as an independent consultant or contractor.

Once you become a professional, what you choose to do next will depend on your goals and objectives. Hacking is an interesting field for a lot of people, especially young people. Hopefully, this beginner guide to hacking gave you some direction and a place to start. After going through all the steps in this guide and exploring the field on your own, you will hopefully become a competent cybersecurity professional who uses his knowledge and expertise for the greater good.

View More. At some point, everyone wants to become a hacker. Beginners Guide to Hacking: Below is a detailed beginners guide to hacking that will help you understand all that is you will need to know to become a competent hacker. But before you learn how to become a hacker, you should know the basic terminologies in hacking. Who is a hacker?

Types of Hacking: There are three major categories for hacking and hackers: Black Hat. You should not want to be a black hat hacker at all. White Hat. Grey Hat. Grey hat is something between white hat and black hat hacking. How to become a hacker? Programming A background in computer science or programming will help you significantly as a beginner hacker. Here are some languages that you need to master: HTML not a programming language, but acts as the infrastructure of the internet Python general-purpose programming language, easy to use JavaScript object-oriented language used primarily for web development SQL language used for data manipulation, handling, etc.

Do you need to learn all these languages to be a hacker? Yes and no. Your coding skills will also improve if you take part in different competitions. Use Different Operating Systems. Essential Soft Skills. You also need to have a growth mindset and a passion for keeping learning and improving. Personal Projects and Accomplishments. To get a technical job, your skillset will matter more than your GPA or certifications.