Network Security

Network Security

What is Cisco?

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What Is CIsco? And Why It Is Important

Introduction Cisco Systems, Inc. is a globally recognized technology giant, primarily known for its cutting-edge networking hardware, telecommunications equipment, and other high-technology services. Established in 1984 by Leonard Bosack and Sandy Lerner, two Stanford University scientists, Cisco began its journey with the development of the first commercially successful multi-protocol router. This innovation revolutionized how computers communicated over a network, laying the foundation for the modern

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Network Security / Python Projects

Network Traffic Monitoring and Analysis with Scapy

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Network Traffic Monitoring and Analysis with Scapy

Introduction In today’s interconnected world, computer networks form the backbone of data transmission across the globe. Within these networks, vast amounts of data are constantly being exchanged. Understanding network traffic is crucial for various applications, including network security, troubleshooting, and monitoring network performance. Scapy, an open-source Python library, provides a powerful toolset for manipulating network protocols. In this article, we will introduce you to the basics of

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Network Security / Programming / Python Projects

ARP Sniffing with Scapy: Analyzing ARP Traffic on the Network

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ARP Sniffing with Scapy Analyzing ARP Traffic on the Network

Introduction Network security and analysis have become more critical than ever in today’s information technology landscape. Network administrators and security experts rely on various tools to effectively monitor and understand the traffic on their networks. In this article, we will explore how to sniff and analyze ARP (Address Resolution Protocol) traffic using Scapy, a Python-based network packet manipulation library. Learning Objectives

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cheat sheet / Network Security

What is Wireshark? Understanding and Analyzing Network Traffic

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What is Wireshark? Understanding and Analyzing Network Traffic

Introduction Network traffic analysis is one of the cornerstones of modern network management and cybersecurity. Wireshark is one of the most popular and effective tools in this domain. As an open-source network protocol analyzer, Wireshark allows users to capture, inspect, and analyze network traffic in real-time. This tool is critical for both network administrators and security professionals, facilitating the deep examination of

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Network Security / Programming / Python Projects

Network Security Decryption: With Scapy and Cryptography

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Network Security Decryption: Practical Applications with Scapy and Cryptography

Introduction In the digital age, safeguarding sensitive information during transmission across networks is paramount. Encryption is a fundamental technique for ensuring data confidentiality and preventing unauthorized access. However, there are legitimate scenarios where analyzing encrypted network traffic becomes necessary, such as for security monitoring, troubleshooting, or debugging. This article explores two scenarios: one where we possess the encryption key, enabling decryption, and another where the key

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Cyber Security / IT certificates / Network Security

Cisco Certifications: Roadmap to Enhancing Your Career

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Cisco Certifications: Roadmap to Enhancing Your Career

Introduction In today’s rapidly advancing technology landscape, the demand for network and communication systems experts is on the rise. Professionals looking to build a career in this field can gain a competitive edge and showcase their knowledge and skills by pursuing certifications. Cisco, a globally recognized and trusted brand, offers certifications that provide individuals with the necessary knowledge and competencies

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Cyber Security / Network Security

What is DNS Lookup? and Examples of the nslookup Command

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What is DNS Lookup and Examples of the nslookup Command

Introduction One of the fundamental building blocks of the internet is the Domain Name System (DNS), which plays a critical role in simplifying our access to websites. DNS translates domain names into IP addresses, facilitating communication between humans and computers. This technology, which we use daily, ensures seamless browsing on the internet. In this article, we will explore what DNS lookup is, how it works, and

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Network Security

What is a Network?

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What is a Network

Introduction In today’s rapidly advancing digital world, networks are the backbone of communication, data transfer, and resource sharing. Whether it’s connecting people through social media, enabling global business operations, or simply allowing us to browse the internet, networks are integral to modern life. This article will delve into the concept of networks, exploring what they are, how they function, the different types, and the crucial role of

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computers / Cyber Security / Network Security

Detecting Operating Systems with Nmap: Uncover OS

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Introduction Network security is one of the most critical aspects of modern information technology. One of the key responsibilities of a network administrator or cybersecurity professional is to ensure the security of devices on the network. However, to achieve this, it’s crucial first to understand the operating systems of the devices within the network. Knowing the operating systems helps in

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Network Security / Programming / Python Projects

DNS Security Tool: Monitoring and Detecting DDoS/DoS Attacks with Python

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Introduction In today’s networked world, securing DNS traffic is crucial. DNS, being one of the core protocols of the internet, is often targeted by attackers for DDoS and DoS attacks. Monitoring DNS traffic for unusually large packets can help in detecting these attacks early. This article walks you through creating a Python-based tool using pyshark and colorama to monitor DNS traffic and alert you to

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