Dos attack basic
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This document discusses denial of service (DoS) and distributed denial of service (DDoS) attacks. It defines DoS as a malicious attempt to deny service to customers of a victim site or node. It can cause network congestion, use up CPU time and memory, and make sites unavailable. Symptoms include slow performance, inability to access websites, and connection issues. DoS attacks are classified into bandwidth/throughput attacks, protocol attacks, and software vulnerability attacks. The document provides examples like SYN floods, Smurf attacks, and discusses ways to help mitigate attacks like using firewalls, switches, routers, and distributed defense systems.
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- How DDoS attacks are evolving to larger sizes and more complex botnets.
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Distributed Denial of Service (DDoS) attacks today
have been amplified into gigabits volume with
broadband Internet access; at the same time, the us
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mitigation and protection solutions implemented in
small and large organizations’ networks and servers
are no longer effective. Our survey provides an in-
depth study on the current largest DNS reflection a
ttack
with more than 300 Gbps on Spamhaus.org. We have re
viewed and analysed the current most popular
DDoS attack types that are launched by the hacktivi
sts. Lastly, effective cloud-based DDoS mitigation
and
protection techniques proposed by both academic res
earchers and large commercial cloud-based DDoS
service providers are discussed
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have been amplified into gigabits volume with
broadband Internet access; at the same time, the us
e of more powerful botnets and common DDoS
mitigation and protection solutions implemented in
small and large organizations’ networks and servers
are no longer effective. Our survey provides an in-
depth study on the current largest DNS reflection a
ttack
with more than 300 Gbps on Spamhaus.org. We have re
viewed and analysed the current most popular
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sts. Lastly, effective cloud-based DDoS mitigation
and
protection techniques proposed by both academic res
earchers and large commercial cloud-based DDoS
service providers are discussed
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- How DDoS attacks are evolving to larger sizes and more complex botnets.
- Methods for mitigating DDoS attacks including black hole routing, rate limiting, web application firewalls, anycast networks and cloud-based DDoS protection services.
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protection techniques proposed by both academic res
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have been amplified into gigabits volume with
broadband Internet access; at the same time, the us
e of more powerful botnets and common DDoS
mitigation and protection solutions implemented in
small and large organizations’ networks and servers
are no longer effective. Our survey provides an in-
depth study on the current largest DNS reflection a
ttack
with more than 300 Gbps on Spamhaus.org. We have re
viewed and analysed the current most popular
DDoS attack types that are launched by the hacktivi
sts. Lastly, effective cloud-based DDoS mitigation
and
protection techniques proposed by both academic res
earchers and large commercial cloud-based DDoS
service providers are discussed
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This document discusses denial of service (DoS) attacks. It defines DoS as an attack meant to make a machine or network unavailable to its intended users. Several common DoS attack methods are described, including ICMP floods, teardrop attacks, and reflected/spoofed attacks. The document also provides information on tools used for DoS attacks and discusses how to identify an attack, what to do in response, and how to avoid being part of the problem.
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DOS / DDOS introduction
How Easy it is to get information
Real Life Examples MyDoom , GitHub , Dyn , Windows Server and Windows 10 servers running Internet Information Services (IIS) are vulnerable to denial of service (DOS) attacks
Base of Attacks
Types of DOS / DDOS
Attack Tools , LOIC, XOIC, Stacheldracht
DOS/DDOS Weaknesses
Category of OS/ DDOS
What to defend?
Botnets and Botnets mitigations
Michael Calce, a.k.a. MafiaBoy
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This document discusses denial of service (DoS) and distributed denial of service (DDoS) attacks. It defines DoS attacks as attempts to render a system unusable or slow it down for legitimate users by overloading its resources. DDoS attacks multiply the effectiveness of DoS by using multiple compromised computers to launch attacks simultaneously. Common DoS attack types like SYN floods, Smurf attacks, and ping of death are described. The rise of botnets, which are networks of compromised computers controlled remotely, enabled more powerful DDoS attacks. Mitigation strategies include load balancing, throttling traffic, and using honeypots to gather attacker information.
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A survey of trends in massive ddos attacks and cloud based mitigations
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A SURVEY OF TRENDS IN MASSIVE DDOS ATTACKS AND CLOUD-BASED MITIGATIONS
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The document proposes a new collaborative trust and enhanced security model for distributed systems. It introduces components like a SuperHost, Key Distribution Center (KDC), agents, clients, and servers. The SuperHost acts as a central controller and authenticates clients. An agent system balances server loads and provides client references. Clients are authenticated through the KDC before requesting services from load-balanced servers. The proposed model enhances security and performance in distributed systems through collaborative authentication and load balancing.
A New Form of Dos attack in Cloud
The document describes a new type of denial-of-service (DoS) attack that can occur in cloud data centers due to their underprovisioned nature. It identifies that by saturating the network bandwidth between hosts in different subnets, an attacker can target specific applications by congesting the uplink connecting the targeted subnet. It then proposes two approaches for an attacker to identify the network topology and determine a suitable bottleneck link to attack. Finally, it shows that through rapidly launching many virtual machines, an attacker can quickly gain access to a sufficient number of hosts connected to the targeted router subnet to launch an effective bandwidth saturation attack.
Biometrics
Biometrics uses physiological and behavioral characteristics to identify or verify humans. There are three main types: physiological (e.g. fingerprints, face), behavioral (e.g. signature, voice), and fingerprints are analyzed by features like ridges and minutiae points. Face recognition examines facial features and geometry. Signature verification can be static or dynamic based on pen movement. Voice is behavioral but different from speech recognition. Biometrics provides convenient and reliable identification but has some limitations like fingerprints being affected by certain jobs and other biometrics changing with age or medical conditions.
IPC SOCKET
This document discusses different types of sockets for inter-process communication including stream, sequential, datagram, and raw sockets. It describes the basic socket functions like creating, binding, connecting, sending and receiving data, and closing sockets. Stream sockets provide reliable connected data flow, while datagram sockets support unreliable disconnected messages. Raw sockets allow low-level access. UNIX domain sockets are similar but provide more efficient communication within a single machine compared to network sockets.
Inverted page tables basic
The document discusses virtual memory management techniques, including inverted page tables and demand paging. With inverted page tables, there is one entry per physical page that maps a process ID and page number to a physical address. With demand paging, pages are only loaded into memory when accessed by a process, reducing loading latency at startup. While this improves memory usage, it can lead to thrashing if paging occurs too frequently at the expense of processing.
Hardware virtualization basic
Hardware virtualization allows multiple operating systems to run on a single machine using a virtual machine manager (VMM) or hypervisor. The hypervisor creates virtual machines as guest machines that run on the host hardware. Full virtualization completely simulates the hardware, allowing unmodified guest operating systems. Partial virtualization simulates some but not all of the target environment, requiring some guest programs to be modified. Hardware virtualization disaster recovery environments use hardware and software protection based on business continuity needs, including tape backup for long-term data archiving and whole file or application replication to another disk. While virtualization reduces IT infrastructure complexity through better resource utilization, it still requires purchasing and maintaining servers and software.
Steganography basic
Steganography is the technique of hiding a secret message within an ordinary message or file. It conceals the very presence of communication, unlike cryptography which only conceals the contents of the message. There are various types of steganography including text, image, audio, and video. Image steganography techniques include least significant bit insertion where the least significant bit of image file bytes are replaced with bits of the secret message. Audio steganography hides messages in audio files or spectra by techniques like embedding messages in the inaudible frequency range. Video steganography takes advantage of large amounts of data that can be hidden in videos which are collections of images and sounds in continuous flow.
Digital signatures
Digital signatures provide authenticity, integrity, and non-repudiation for electronic documents by using asymmetric cryptography with a signing key and verification key. The digital signature process involves key generation, signing a message digest with the private key, and verifying the signature with the public key. Digital signatures are used for authentication, integrity, and non-repudiation services and are vulnerable to attacks like key-only attacks and existential or selective forgeries if the private key is compromised.
More from Sanoj Kumar (14)
Recently uploaded
Monitoring and Managing Anomaly Detection on OpenShift.pdf
Monitoring and Managing Anomaly Detection on OpenShift
Overview
Dive into the world of anomaly detection on edge devices with our comprehensive hands-on tutorial. This SlideShare presentation will guide you through the entire process, from data collection and model training to edge deployment and real-time monitoring. Perfect for those looking to implement robust anomaly detection systems on resource-constrained IoT/edge devices.
Key Topics Covered
1. Introduction to Anomaly Detection
- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
- Learn about edge computing and IoT, and how they enable real-time data processing and decision-making at the source.
3. What is ArgoCD?
- Discover ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes, and its role in deploying applications on edge devices.
4. Deployment Using ArgoCD for Edge Devices
- Step-by-step guide on deploying anomaly detection models on edge devices using ArgoCD.
5. Introduction to Apache Kafka and S3
- Explore Apache Kafka for real-time data streaming and Amazon S3 for scalable storage solutions.
6. Viewing Kafka Messages in the Data Lake
- Learn how to view and analyze Kafka messages stored in a data lake for better insights.
7. What is Prometheus?
- Get to know Prometheus, an open-source monitoring and alerting toolkit, and its application in monitoring edge devices.
8. Monitoring Application Metrics with Prometheus
- Detailed instructions on setting up Prometheus to monitor the performance and health of your anomaly detection system.
9. What is Camel K?
- Introduction to Camel K, a lightweight integration framework built on Apache Camel, designed for Kubernetes.
10. Configuring Camel K Integrations for Data Pipelines
- Learn how to configure Camel K for seamless data pipeline integrations in your anomaly detection workflow.
11. What is a Jupyter Notebook?
- Overview of Jupyter Notebooks, an open-source web application for creating and sharing documents with live code, equations, visualizations, and narrative text.
12. Jupyter Notebooks with Code Examples
- Hands-on examples and code snippets in Jupyter Notebooks to help you implement and test anomaly detection models.
June Patch Tuesday
Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.
Skybuffer SAM4U tool for SAP license adoption
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdf
A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor Ivaniuk
At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Dandelion Hashtable: beyond billion requests per second on a commodity server
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Principle of conventional tomography-Bibash Shahi ppt..pptx
before the computed tomography, it had been widely used.
"Choosing proper type of scaling", Olena Syrota
Imagine an IoT processing system that is already quite mature and production-ready and for which client coverage is growing and scaling and performance aspects are life and death questions. The system has Redis, MongoDB, and stream processing based on ksqldb. In this talk, firstly, we will analyze scaling approaches and then select the proper ones for our system.
AppSec PNW: Android and iOS Application Security with MobSF
Mobile Security Framework - MobSF is a free and open source automated mobile application security testing environment designed to help security engineers, researchers, developers, and penetration testers to identify security vulnerabilities, malicious behaviours and privacy concerns in mobile applications using static and dynamic analysis. It supports all the popular mobile application binaries and source code formats built for Android and iOS devices. In addition to automated security assessment, it also offers an interactive testing environment to build and execute scenario based test/fuzz cases against the application.
This talk covers:
Using MobSF for static analysis of mobile applications.
Interactive dynamic security assessment of Android and iOS applications.
Solving Mobile app CTF challenges.
Reverse engineering and runtime analysis of Mobile malware.
How to shift left and integrate MobSF/mobsfscan SAST and DAST in your build pipeline.
Essentials of Automations: Exploring Attributes & Automation Parameters
Building automations in FME Flow can save time, money, and help businesses scale by eliminating data silos and providing data to stakeholders in real-time. One essential component to orchestrating complex automations is the use of attributes & automation parameters (both formerly known as “keys”). In fact, it’s unlikely you’ll ever build an Automation without using these components, but what exactly are they?
Attributes & automation parameters enable the automation author to pass data values from one automation component to the next. During this webinar, our FME Flow Specialists will cover leveraging the three types of these output attributes & parameters in FME Flow: Event, Custom, and Automation. As a bonus, they’ll also be making use of the Split-Merge Block functionality.
You’ll leave this webinar with a better understanding of how to maximize the potential of automations by making use of attributes & automation parameters, with the ultimate goal of setting your enterprise integration workflows up on autopilot.
Choosing The Best AWS Service For Your Website + API.pptx
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
Artificial Intelligence and Electronic Warfare
Artificial Intelligence and Electronic WarfarePapadakis K.-Cyber-Information Warfare Analyst & Cyber Defense/Security Consultant-Hellenic MoD
AI & Electronic Warfare[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...
The typical problem in product engineering is not bad strategy, so much as “no strategy”. This leads to confusion, lack of motivation, and incoherent action. The next time you look for a strategy and find an empty space, instead of waiting for it to be filled, I will show you how to fill it in yourself. If you’re wrong, it forces a correction. If you’re right, it helps create focus. I’ll share how I’ve approached this in the past, both what works and lessons for what didn’t work so well.
Columbus Data & Analytics Wednesdays - June 2024
Columbus Data & Analytics Wednesdays, June 2024 with Maria Copot 20
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
HCL Notes and Domino License Cost Reduction in the World of DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...Edge AI and Vision Alliance
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/how-axelera-ai-uses-digital-compute-in-memory-to-deliver-fast-and-energy-efficient-computer-vision-a-presentation-from-axelera-ai/
Bram Verhoef, Head of Machine Learning at Axelera AI, presents the “How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-efficient Computer Vision” tutorial at the May 2024 Embedded Vision Summit.
As artificial intelligence inference transitions from cloud environments to edge locations, computer vision applications achieve heightened responsiveness, reliability and privacy. This migration, however, introduces the challenge of operating within the stringent confines of resource constraints typical at the edge, including small form factors, low energy budgets and diminished memory and computational capacities. Axelera AI addresses these challenges through an innovative approach of performing digital computations within memory itself. This technique facilitates the realization of high-performance, energy-efficient and cost-effective computer vision capabilities at the thin and thick edge, extending the frontier of what is achievable with current technologies.
In this presentation, Verhoef unveils his company’s pioneering chip technology and demonstrates its capacity to deliver exceptional frames-per-second performance across a range of standard computer vision networks typical of applications in security, surveillance and the industrial sector. This shows that advanced computer vision can be accessible and efficient, even at the very edge of our technological ecosystem.Driving Business Innovation: Latest Generative AI Advancements & Success Story
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
Recently uploaded (20)
Monitoring and Managing Anomaly Detection on OpenShift.pdf
Monitoring and Managing Anomaly Detection on OpenShift.pdf
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdf
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdf
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor Ivaniuk
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor Ivaniuk
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
Dandelion Hashtable: beyond billion requests per second on a commodity server
Dandelion Hashtable: beyond billion requests per second on a commodity server
Principle of conventional tomography-Bibash Shahi ppt..pptx
Principle of conventional tomography-Bibash Shahi ppt..pptx
AppSec PNW: Android and iOS Application Security with MobSF
AppSec PNW: Android and iOS Application Security with MobSF
Nordic Marketo Engage User Group_June 13_ 2024.pptx
Nordic Marketo Engage User Group_June 13_ 2024.pptx
Essentials of Automations: Exploring Attributes & Automation Parameters
Essentials of Automations: Exploring Attributes & Automation Parameters
Choosing The Best AWS Service For Your Website + API.pptx
Choosing The Best AWS Service For Your Website + API.pptx
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
HCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAU
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Dos attack basic
- 2. WHAT IS DOS ATTACK?? Denial of service : It is a malicious attempt by a single person or a group of people to cause the victim, site or node to deny service to it customers. DOS: when a single host attacks DDOS: when a multiple host attacks simultaneously.
- 4. What are the effects? Bandwidth : network congestion CPU time : make someone do expensive and complex calculation. Memory : tie up system state
- 5. Symptoms of DOS attack Unusually slow network performance Unavailability of a particular website Inability to access any website Dramatic increase in spam email received(email bomb) Disconnection of a wireless or wired internet connection
- 6. Attack classification DOS attack can be classified into three categories : Bandwidth/throughput attacks Protocol attacks Software vulnerability attacks
- 7. Bandwidth attacks Leads to the problem in the “network branches” around the actual computer being attacked Ping Flood attack (ICMP echo) SYN Flood attack (DOS attack) DDOS attack (distributed DOS) UDP Flood attacks
- 9. Protocol attacks These kind of attacks are carried out by using spoofed IP address Smurf attack DNS name server attack
- 10. Smurf attacks Packets are sent to all hosts using the broadcast address of the network
- 11. Software vulnerability attack This attacks leads to the system crashes Types are :- Land attack Ping to death attack Fragmentation attack and teardrop attack
- 12. Damage and costs The impact of DOS attack : Hidden costs Bandwidth wastage Logging cost Extra network channel Insurance and bandwidth cost
- 13. Handling of DOS We cannot stop DOS attack but we can reduce it by using Firewalls Switches Routers DDS based defense Clean pipes
- 14. thank you