Crap flooding
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Crap flooding is a type of denial of service attack on Internet Relay Chat (IRC) networks that involves posting a large amount of repetitive text messages to overwhelm the network bandwidth and storage space. It works by sending more data faster than the receiver can process it, exhausting the bandwidth and annoying users by trying to hide important messages. Protections against crap flooding include ignoring features, limiting message replies on the client side, and firewalls or server-side limits.
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The document discusses denial of service (DoS) attacks and how they work. It notes that in February 2000, several major websites like Yahoo, Amazon, and eBay were attacked for three days. Analysts estimated Yahoo lost $500,000 in revenue during a 3 hour outage. The document then categorizes DoS attacks and describes several common types like ping floods, SYN floods, UDP floods, Smurf attacks, and DNS server attacks. It explains how each attack method is carried out to overwhelm the target with traffic.
Week2 lec3-bscs1
Computer Networks Chapter 1 provides an introduction and overview of computer networking concepts. It describes the layered Internet protocol stack including the application, transport, network, link, and physical layers. It discusses popular application layer protocols like HTTP, FTP, and DNS. It also covers fundamental networking concepts like encapsulation, throughput, packet loss, delay, and the client-server and peer-to-peer architectures used in modern network applications.
A10 issa d do s 5-2014
This document discusses the growing threat of distributed denial of service (DDoS) attacks and strategies for mitigating them. It notes that DDoS attacks are increasing in size and sophistication, with some now reaching hundreds of gigabits per second. The document outlines different types of network layer and application layer DDoS attacks and examines methods that can be used to detect and prevent these attacks, such as packet anomaly checking, blacklisting, authentication, rate limiting, and protocol inspection. It also describes A10 Networks' Thunder TPS appliance for high-performance DDoS mitigation.
Published on IST 554 (httpsonline.ist.psu.eduist554).docx
Published on IST 554 (https://online.ist.psu.edu/ist554)
Topic 3: Firewalls
The Internet is revolutionary in its ability to publish information and to provide access to information.
However, like any other society, the Internet is plagued with bad guys who enjoy the electronic
equivalent of spying on other people, stealing their valuables, destroying their property, or simply
disturbing the peace. This poses a great danger to those who try to get real work done over the
Internet or who have sensitive or proprietary data and resources on the Internet to protect.
Connecting a network to the Internet, while maintaining a certain degree of security, has become a
major task for many corporations. It is therefore natural to think about how to develop a system that
can act as a protective boundary between a private network and the outside world. Like a guard in
front of a securely controlled building, a firewall is a security system that restricts access between
the outside (i.e., the Internet) and the inside (your private network).
Many corporations now have security policies and practices to protect their networks. A firewall is a
very important component of those policies and practices. The existence of a firewall has been
proven to greatly reduce the chances of internal systems and networks getting penetrated and
compromised.
Topic objectives:
Explain the TCP/IP model and common Internet services.
Define a firewall and describe its capabilities.
Define packet filtering technology, describe how the technology works, and identify the
capabilities of the technology when building a firewall.
Define stateful packet filtering technology and describe how the technology works.
Define proxying firewall technology, describe how proxy servers and clients work and their
capabilities when building a firewall.
Describe different firewall architectures.
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Each lesson under topic 3 will have its own lecture slides.
Lesson 1: TCP/IP Model and Internet Services
The Internet is the world's largest computer network. This lesson describes how different computer
systems communicate via TCP/IP and how different services such as Web service, e-mail service,
etc., are provided on the Internet. It further describes several common Internet services as well as
major security implications of each of these services.
Lesson objectives:
Define TCP/IP and explain how TCP/IP works.
Describe TCP ports.
Explain how Internet services work and communicate.
Discuss common types of Internet services and security implications for distinct services.
Transport Control Protocol/Internet Protocol (TCP/IP)
The Internet is made up of a wide variety of computers, from supercomputers to personal
computers. Each of these computers on the Internet has every imaginable type of software and
applications running. How ...
Denial of Service Attacks (DoS/DDoS)
This is a presentation i made about Denial of Service or a Distributed Denial of Service (DoS / DDoS) and the latest methods used to crash anything online and the future of such attacks which can disrupt the whole internet . Such attacks which are in TB's and can be launched from just single computer. And, there is not much that can be done to prevent them.
I034_I041_I052_DDOS Attacks_Presentation.pdf
The document discusses distributed denial of service (DDoS) attacks and methods to detect them. It describes DDoS attacks as attempts to make network resources unavailable by flooding them with traffic. The document then reviews literature on detection methods like packet marking and cumulative sum algorithms. It presents a methodology using packet sniffing and analysis to identify attack levels based on packet counts. Specifically, it generates DDoS attacks using LOIC and analyzes TCP SYN flood and UDP flood attacks to detect the length of attacks with over 99% accuracy. In conclusion, it emphasizes the challenge of identifying DDoS attacks and discusses using packet headers and contents to identify malicious traffic based on their behaviors.
Common Types of DDoS Attacks | MazeBolt Technologies
To quickly get a handle on the most common types of DDoS attacks that can affect your network, download our guide to the Most Common DDoS Attacks.
Enhancing the impregnability of linux servers
Worldwide IT industry is experiencing a rapid shift towards Service Oriented Architecture (SOA). As a
response to the current trend, all the IT firms are adopting business models such as cloud based services
which rely on reliable and highly available server platforms. Linux servers are known to be highly
secure. Network security thus becomes a major concern to all IT organizations offering cloud based
services. The fundamental form of attack on network security is Denial of Service. This paper focuses on
fortifying the Linux server defence mechanisms resulting in an increase in reliability and availability of
services offered by the Linux server platforms. To meet this emerging scenario, most of the organizations
are adopting business models such as cloud computing that are dependant on reliable server platforms.
Linux servers are well ahead of other server platforms in terms of security. This brings network security
to the forefront of major concerns to an organization. The most common form of attacks is a Denial of
Service attack. This paper focuses on mechanisms to detect and immunize Linux servers from DoS .
ENHANCING THE IMPREGNABILITY OF LINUX SERVERS
Worldwide IT industry is experiencing a rapid shift towards Service Oriented Architecture (SOA). As a response to the current trend, all the IT firms are adopting business models such as cloud based services which rely on reliable and highly available server platforms. Linux servers are known to be highly secure. Network security thus becomes a major concern to all IT organizations offering cloud based services. The fundamental form of attack on network security is Denial of Service. This paper focuses on fortifying the Linux server defence mechanisms resulting in an increase in reliability and availability of services offered by the Linux server platforms. To meet this emerging scenario, most of the organizations are adopting business models such as cloud computing that are dependant on reliable server platforms. Linux servers are well ahead of other server platforms in terms of security. This brings network security to the forefront of major concerns to an organization. The most common form of attacks is a Denial of Service attack. This paper focuses on mechanisms to detect and immunize Linux servers from DoS .
Ntp in Amplification Inferno
This presentation discusses about the attack vector, vulnerable command, and affected code base that lead to NTP amplification attack.
Firewalls (6)
Firewalls act as a choke point to control and monitor network traffic, imposing restrictions to only allow authorized traffic while auditing and controlling access, and providing perimeter defense through techniques like packet filtering, application gateways, and circuit gateways or a combination through dynamic packet filtering.
DMMS presentation25
IPTP's Distributed Mitigation Managed Service (DMMS) provides superior DDoS mitigation compared to traditional clean pipe solutions. DMMS mitigates attacks across IPTP's global network of firewalls with no reaction time, no added latency, higher bandwidth limits, and no extra charges. Clean pipe solutions increase latency, have reaction times of 30 minutes to an hour, lower bandwidth capacity, and can incur extra costs for exceeding bandwidth limits.
Report on xss and do s
This document summarizes information about cross-site scripting (XSS) and denial of service (DoS) attacks against web applications. It describes persistent and non-persistent XSS, how stored XSS works, and discusses the IE8 XSS filter and its flaws. It also outlines how HTTP TRACE methods can be abused and explains common DoS attack techniques like SYN flooding and ping flooding that aim to overload server resources and prevent legitimate access. The document provides references for further reading on web application vulnerabilities and exploits.
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Session for InfoSecGirls - New age threat management vol 1
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3150710_CN_GTU_Study_Material_Presentations_Unit-2_13082021073829PM.pdf
3150710_CN_GTU_Study_Material_Presentations_Unit-2_13082021073829PM.pdf
Published on IST 554 (httpsonline.ist.psu.eduist554).docx
Published on IST 554 (httpsonline.ist.psu.eduist554).docx
Common Types of DDoS Attacks | MazeBolt Technologies
Common Types of DDoS Attacks | MazeBolt Technologies
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Crap flooding
- 1. CRAP FLOODING By : Heena Saini M.Tech 1st sem
- 2. Flooding… Is done on IRC network method of disconnecting user from IRC server. Crap flooding is one of type of flooding.
- 3. IRC.. Is Internet relay chat flood. TCP based application based protocol. Provide communication in the text form. Its based on client server networking model.
- 4. Crap flooding… Involves posting large amount of posts or very long post with repetitive text. Simplest type of IRC flooding. Follow DOS attack concept
- 5. Dos attack.. Denial of service Attack on network.
- 6. Done by: Sending data faster than receiver's capacity. Sending maximum number of messages in limited time. Attacker have large number of connection to the IRC network. Script or external programs.
- 7. Target.. To annoying user. Try to hide important content. Reduced bandwidth and storage space.
- 8. Example..
- 9. Effect… exhausting bandwidth which cause network latency. User got annoyed. Waste storage space of the client.
- 10. Protection.. IRC has ignored featured protection. Incoming messages, CTCP, invitation blocked according ignored list. Also client can limit the number of replies. Firewalls Server side
- 11. Thank you