Ceh Cheat Sheet

-interpreting involves explaining the principles of data and how they occur, validity and reliability of the data

Denial of Service (DoS) attack is a very common cyber menace that renders websites and other online means inaccessible to intended users. There are various types of DoS threats and nearly all directly target the core server structure. Others abuse weaknesses in application and communication proprieties. DoS is also used as a cover-up for other wicked actions, and to take down security applications like web firewalls. A prosperous DoS attack is very obvious and impacts the entire online user base.

Denial of Service (DoS) attacks are becoming increasingly common and serious issues when it comes to Cyber Security across many industries especially with ecommerce business. Therefore, companies need to have a recovery plan in first place to cover emergency communication, as well as mitigate and identify any attacks, in order to improve recovery time and limit downtime. （OpsCentre. 2013）

2. Frequency: DDoS weaponization, via the proliferation of attacks tools and services, has made even large, sophisticated DDoS attacks available to anyone.  The frequencies of large attacks have grown hugely, and overall attack frequencies are also on the up. Early data from this year’s World-Wide Infrastructure Security Survey shows another big jump in the frequency with which enterprises around the world are being targeted this year.

Ping sweeps and ports scans are a common ways for hackers to probe a network and attempt to break into it. Although network probes are technically not intrusions themselves, they should not be taken lightly—they may lead to actual intrusions in the future. In the information that follows, I will provide a standard definition of a ping sweep and port scan, the possible uses of the two, and the prevention methods which are in place in our company to combat ping sweeps and port scans of our network by would be attackers.

The Domain Name system is a system on the internet used to translate IP addresses (long string of numbers that describe the “location” of a resource on the internet) into recognisable names, this makes it easier for humans to navigate the internet as it is much easier to remember the name of a website than to remember its I.P. address. It is a hierarchical system that points users to various resources, computers or services on the internet, such as images or videos.

sale of credit card details belonging to millions of clients. Credit card companies and banks should be able to know the kind of customer’s details that is already in the dark web and block those cards in order to avoid counterfeit use (Kandel, 2010). A majority of the cybercrime attacks against companies are usually planned through dark web message boards. Company web servers are flooded with traffic by hackers’ controlled Computer networks up to a point when they become overloaded. This is also referred to as DDOS (Distributed Denial of Service attacks). In the year 2013 the largest attack took place when Spamhaus was attacked by hackers with the intention of taking the company offline and destroying its services. Hackers also use the

DDOS is a type of DOS attack where multiple compromised systems -- which are usually infected with a Trojan -- are used to target a single system causing a Denial of Service (DoS) attack. Victims of a DDoS attack consist of both the end targeted system and all systems maliciously used and controlled by the hacker in the distributed attack.

Messages that offer kinships, redirection, blessings and different free pictures and information exploit the namelessness and fellowship of the Internet to plant malicious code. The worker opens messages and connections thrash which Trojans, Viruses and Worms and other uninvited projects discover their direction into frameworks and networks.

A domain name alludes to the named address or distinguishing label given to a domain on the web. The domain name enables others to get to your site effortlessly with a simple to recall address as opposed to utilizing a numeric IP address. Enrolling a domain name secures that particular web address. Nobody else can utilize that specific space name on the web.

The domain name management industry deals with domain name registry, transfer and management. Domain name is unique address within the internet network, similar to a physical address in real world. Some of the example of domain name are: google.com, apple.com or amazon.com.

The Domain Name System (DNS) is a major component of the Internet that maps human understandable names to machine level IP addresses. From the past few years, as the Internet are evolved across the regions, more service providers started using DNS in a way which was not meant such cases were used often in content delivery networks (CDNs), NXDOMAIN Remapping and URL auto completion. But the paper mainly focus on the new class of DNS misuse called disposable domains and author found that various service providers, popular search engines, social networks and security companies, started heavily using automatically generated domain names to send ‘one-time signal’ to their servers. These disposable domains are generally created on demand in abundant which belongs to common parent DNS zones. They have unique cache hit rate percent which distinguish them from non-disposable domains (Yizheng et al., 2014).

Hence as early we discussed DNS is termed as Domain Name System which is used in converting domain names into IP addresses. It is also globally distributed, scalable, reliable database. In DNS and DNSSEC there are many issues which are difficult to defend. The given data in name servers does not have co-ordination between the data origin to data integrity. So this all will lead to Man in Middle attacks. There are some attacks on DNS which effects the performance of DNS. There are many attacks on DNS like

There is no relation between an IP address and the FQDN. They are somewhat related as the name of a person, and his telephone number. A list of IP Addresses and their corresponding Domain names is kept in servers called the Domain name service Servers - DNS Server. A Domain name has four parts:

DNS stands for Domain Name System. These are the backbone to being able to use domains to navigate the internet. DNS is the protocol and standards that tell computers how to look at and interpret easy Domain name such as “google.com” into a language that computers can understand.