CEH Q&A

 

1. How can you avoid ARP poisoning?


ARP poisoning is a type of network attack that can be resolved through these techniques:

Using Packet filtering: Packet filters can filter out & block packets with clashing source address data.

Keeping away from trust relationship: Organizations ought to develop a protocol that depends on trust relationship as little as they can.

Utilize ARP spoofing software: Some programs assess and certify information before it is transmitted and blocks any information that is spoofed.




2. What can an ethical hacker do?


An ethical hacker is a computer system and networking master who systematically endeavours to infiltrate a PC framework or network for the benefit of its owners to find security vulnerabilities that a malicious hacker could potentially exploit.




3. Why is Python utilized for hacking?


Most broadly utilized scripting language for Hackers is Python. Python has some very critical highlights that make it especially valuable for hacking, most importantly, it has some pre-assembled libraries that give some intense functionality.




4. What is Pharming and Defacement?


Pharming : In this strategy the attacker compromises the DNS (Domain Name System) servers or on the user PC with the goal that traffic is directed towards malicious site

Defacement : In this strategy the attacker replaces the firm’s site with an alternate page. It contains the hacker’s name, images and may even incorporate messages and background music.




5. What is Cowpatty?


Cowpattyis implemented on an offline dictionary attack against WPA/WPA2 networks utilizing PSK-based verification (e.g. WPA-Personal). Cowpatty can execute an enhanced attack if a recomputed PMK document is accessible for the SSID that is being assessed.




6. What is Network Enumeration?


Network Enumeration is the revelation of hosts/gadgets on a network, they tend to utilize obvious disclosure protocols, for example, ICMP and SNMP to gather data, they may likewise check different ports on remote hosts for looking for surely known services trying to further recognize the function of a remote host.




7. Distinguish between phishing and spoofing?


Phishing and spoofing are totally different beneath the surface. One downloads malware to your PC or network, and the other part tricks you into surrendering sensitive monetary data to a cyber-crook. Phishing is a technique for recovery, while spoofing is a method for delivery

8. What do you mean by DOS (Denial of administration) assault? Explain. What are the regular types of DOS assault?


Denial of Service, is a malicious attack on network that is executed by flooding the system with useless traffic. Despite the fact that DOS does not cause any data breach or security breach, it can cost the site proprietor a lot of cash and time.

• Buffer Overflow Attacks
• SYN Attack
• Teardrop Attack
• Smurf Attack
• Viruses

9. What do you understand by footprinting in ethical hacking? What are the techniques utilized for foot printing?


Footprinting is nothing but accumulating and revealing as much as data about the target network before gaining access into any network. Open Source Footprinting : It will search for the contact data of administrators that will be utilized for guessing password in Social Engineering Network Enumeration :The hacker attempts to distinguish the domain names and the network blocks of the target network Scanning : After the network is known, the second step is to spy the active IP addresses on the network. For distinguishing active IP addresses (ICMP) Internet Control Message Protocol is a functioning IP addresses Stack Fingerprinting : the final stage of foot printing step can be performed, once the hosts and port have been mapped by examining the network, this is called Stack fingerprinting.


10. What is a firewall?


A firewall could be a device that allows/blocks traffic as per outlined set of rules. These are placed on the boundary of trusted and untrusted networks.



11. What is data leakage? How will you detect and prevent it?


Data leak is nothing but data knowledge getting out of the organization in an unauthorized manner. Data will get leaked through numerous ways in which – emails, prints, laptops obtaining lost, unauthorized transfer of data to public portals, removable drives, pictures etc. There are varied controls which may be placed to make sure that the info doesn’t get leaked, many controls will be limiting upload on web websites, following an internal encryption answer, limiting the emails to the interior network, restriction on printing confidential data etc.





12. What is SQL injection and its types?


If the application doesn’t sanitize the user input then the SQL injection happens. Thus a malicious hacker would inject SQL question to gain unauthorized access and execute administration operations on the database. SQL injections may be classified as follows:

• Error-based SQL injection
• Blind SQL injection
• Time-based SQL injection

13. What's a denial of service (DOS) attack and what are the common forms?


DOS attacks involve flooding servers, systems or networks with traffic to cause over-consumption of victim resources. This makes it troublesome or not possible for legitimate users to access or use targeted sites.

Common DOS attacks include:

• Buffer overflow attacks
• ICMP flood
• SYN flood
• Teardrop attack
• Smurf attack

14. Differentiate Between a MAC and an IP Address?


All networks across devices are assigned a number which is unique, which is termed as MAC or Machine Access Control address. This address may be a personal mail box on the net. The network router identifies it. the amount may be modified anytime.All devices get their distinctive information processing address so they can be located easily on a given laptop and network. Whoever is aware of your distinctive information processing address will contact you through it.



15. What is SSL and why is it not enough when it comes to encryption?


SSL is identity verification, not hard encryption. it’s designed to be able to prove that the person you’re engaging on the other side is who they say they are. SSL and TLS are each used by almost everyone online, however because of this it is a huge target and is mainly attacked through its implementation (The Heartbleed bug for example) and its far-famed methodology.