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DDOS ATTACKS AND PREVENTION

Dear Readers,

Let us present our latest issue entitled DdoS Attacks and Protection. Inside, you will find a few interesting tutorials that will help you develop your skills. Our experts prepared 10 articles in which they aim to familiarize you with various attacks and defence techniques.

*Attention* DDoS Attacks and Protection is our first issue that is not available in individual purchase mode. If you are interested in getting the issue, or would like to learn more about our new policy please send your messages to krzysztof.samborski@hakin9.org

INSIDE:

Antonio Ierano

DDoS and The Internet

There is always a lot to say about security and The Internet. A different form of an attack or a threat comes out to the public attention and is overexposed by media and vendor marketing.

One truth we should always remember is that there are a lot of different attacks and, from time to time, one or another rises up or peaks due to several circumstances: political, environmental, technological or economical. There will be always a bunch of different technologies misused to perform the attack on the net…

Azi Ronen

Cloud-based DdoS Protection Services

In recent years Distributed Denial of Service (DDoS) attacks have become a mainstream threat to businesses, governmental agencies and critical infrastructure worldwide. DDoS attacks have grown in complexity, volume and sophistication. 65 percent of IT security practitioners surveyed recently reported experiencing an average of three DDoS attacks in the past 12 months…

Donald Gooden

A Simple SYN. Distributed Denial of Service

DDOS: as defined by Wikipedia: is an attempt to make a machine or network resource unavailable to its intended users.  This method is one of the oldest ways to hit a system (…) this method works on so many types of systems (…) web pages, apps, internet connections, smart phones, dumb phones, old phones, with sooooo many different ways to make this happen (…) DDOS the distributed part is the piece that makes the difference when it comes to the networking aspect of things…distributed…. distributed …a denial of service…I’m unable to get to my online banking page, my email isn’t working today, I can’t log into my system from home, from my cell phone, from my desk, from my…from my…from my…these are single system service denials…just single… Wikipedia: as clarification, DDOS attacks are sent by two or more person, or bots. Denial of Service (DOS)attacks are sent by one person or system…

Michael Lemire

Choosing a DDOS Protection Service

In the early days of the Internet, DOS attacks were simpler. Protocol manipulation attacks such as Ping flood, TCP Syn flood and the so called Smurf Attack were designed to overwhelm victim hosts TCP stacks and bandwidth in order to prevent them from serving legitimate requests. Network vendors fought back and began to provide basic DOS protection against these most common protocol manipulation attacks. Border routers (routers which sit between your infrastructure and the Internet) provide access control lists (ACLs) which can be configured to drop unneeded protocols.   Packet inspection firewall vendors added protocol anomaly protection capabilities. Configuring your router and firewall’s basic DOS protection against these types of protocol anomalies can be considered baseline protection…

Nakibly Gabi, Roee Hay, Jonathan Kalechstein

Subverting BIND’s SRTT Algorithm Derandomizing NS Selection

We begin by describing the basics of the DNS protocol. We continue with a survey of known

attacks on DNS, and nalize with a genuine, deterministic attack against BIND’s SRTT (Smoothed Round Trip Time) algorithm. Our method enables derandomization of the target name server thus reduces the expected time of DNS cache poisoning attacks…

Neha Malik

Layer 7: Application Level DdoS

Typically, a Denial of Service (DoS) condition occurs when a server or network resource is unable to service legitimate requests made to it, and therefore unable to perform a function it was designed to. DoS attacks have been around for some time, with the earliest attacks being dated to the first half of 1970’s. This type of attack started out as an avenue for hackers to establish status in underground communities. However, these have evolved into far more sophisticated and dangerous forms that are directed at specific targets for a number of reasons, not excluding cyber-terrorism, corporate rivalry, hacktivism and even exhortation…

Ratan Jyoti

Tackling Layer 7 DDoS Attacks

Distributed Denial of Service (DDoS) attack is a strewn challenge where the spurious or fake packets are sent to the victim in abnormally large number. DDoS attempts to block important services running on victim’s server by flooding the victim’s server with packets. The difference with DoS is that DDoS is that the attacks do not originate from a single host or network but from multiple hosts or networks which might have already been compromised. One of the main challenges here is to find the location of attackers and then block traffic at points near to the source of the attacks. Layer 7 DDoS attacks target the application layer at web or mail servers (eg. HTTP(S), SMTP, FTP etc) such that the service can be denied in effective way to bring web server to lock up or crash. Since they operate at the application protocol level which is OSI Layer 7 ,this attack is known as Layer 7 DDoS attack…

Rodrigo Salvalagio, Eder Plansky Silva

DDoS Attacks and Defense

Denial of Service Attacks exists in decades, but frequency, extension and sophistication are evolving faster than companies can absorb them. This article shows both sides: how attackers are orchestrating and how companies are protecting themselves…

Abdy Martinez

DDoS Attack – You Could Be Attacked Right Now. Are You Prepared?

A DDoS attack could happen at any moment. Even if you have a powerful and well-configured firewall, updated anti-virus and anti-spam or good security practices, depending on the mode of DDoS attack, you will be affected. Trust me! So, are you ready to confront a DDoS attack? No? Please, before you start reading this article, ask your ISP a quote for DDoS protection service…

Ahmed Fawzy

What is DDoS on Cloud

Simply the denial of service (Dos) is an attempt to deny legitimate users to use the cloud service, in the (DDoS) the same matter happened but the attack was launched through thousands of zombies or fake packets and may have led to SLA violation, loses in revenue, lost productivity …etc.


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August 28, 2014

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