CEH And Countermeasures V7 Version 4.2

1. Which of the following countermeasures can specifically protect agianst both the MAC flood and MAC spoofing attacks?

Configure Port Security on the switch

Configure Port Recon on the switch

Configure Switch Mapping

Configure Multiple Recognition on the switch

Configuring Port Security on the switch is an effective countermeasure against both MAC flood and MAC spoofing attacks. Port Security allows the switch to limit the number of MAC addresses that can be learned on a specific port. This prevents MAC flooding attacks where an attacker floods the switch with fake MAC addresses, overwhelming its memory. Additionally, Port Security can also detect and prevent MAC spoofing attacks by only allowing specific MAC addresses to communicate on a port, blocking any unauthorized MAC addresses. This helps to ensure the integrity and security of the network.

Explanation

Configuring Port Security on the switch is an effective countermeasure against both MAC flood and MAC spoofing attacks. Port Security allows the switch to limit the number of MAC addresses that can be learned on a specific port. This prevents MAC flooding attacks where an attacker floods the switch with fake MAC addresses, overwhelming its memory. Additionally, Port Security can also detect and prevent MAC spoofing attacks by only allowing specific MAC addresses to communicate on a port, blocking any unauthorized MAC addresses. This helps to ensure the integrity and security of the network.

2. Jimmy, an attacker, knows that he can take advantage of poorly designed input validiation routines to create or alter SQL commands to gain access to private data or execute commands in the database. What technique does jimmy use to compromise a database?

Jimmy can submit user input that executes an operating system command to compromise a target system

Jimmy can gain control of system to flood the target system with request, preventing legitimate users from gaining access

Jimmy can utilize an incorrect configuration that leads to access with higher-than expected privilege of the database

Jimmy can utilize this particular database threat that is an SQL injection technique to penetrate a target system

Jimmy can compromise a database by utilizing an SQL injection technique. SQL injection is a type of attack where an attacker manipulates user input to inject malicious SQL code into a query, allowing them to gain unauthorized access to the database or execute arbitrary commands. By exploiting poorly designed input validation routines, Jimmy can create or alter SQL commands to access private data or perform unauthorized actions within the database. This technique is a common and serious threat to the security of a database system.

Explanation

Jimmy can compromise a database by utilizing an SQL injection technique. SQL injection is a type of attack where an attacker manipulates user input to inject malicious SQL code into a query, allowing them to gain unauthorized access to the database or execute arbitrary commands. By exploiting poorly designed input validation routines, Jimmy can create or alter SQL commands to access private data or perform unauthorized actions within the database. This technique is a common and serious threat to the security of a database system.

3. This type of Port Scanning technique spilts TCP header into several packets so that the packet filters are not able to detect what the packets intends to do.

UDP Scanner

IP Fragment Scanning

Inverse TCP Flag scanning

ACK Flag scanning

IP Fragment Scanning is a type of port scanning technique where the TCP header is divided into multiple packets. This fragmentation makes it difficult for packet filters to detect the true intention of the packets. By splitting the header, the scanner can bypass security measures that may be in place to detect and block port scanning activities. This technique allows the scanner to gather information about open ports and vulnerable services without being detected easily.

Explanation

IP Fragment Scanning is a type of port scanning technique where the TCP header is divided into multiple packets. This fragmentation makes it difficult for packet filters to detect the true intention of the packets. By splitting the header, the scanner can bypass security measures that may be in place to detect and block port scanning activities. This technique allows the scanner to gather information about open ports and vulnerable services without being detected easily.

4. This IDS defeating technique works by splitting a datagram (or packet) into multiple fragments and the IDS will not spot the true nature of the fully assembled datagram. The datagram is not reassembled until is reaches its final destination. It would be a processor-intensive task for the IDS to reassemble fragments itself, and on a busy system the packet will slip through the IDS onto the network. What is this technique called?

IP Routing or Packet Dropping

IDS Spoofing or Session Assembly

IP Fragmentation or session splicing

IP Slicing or Packet Reassembly

This technique is called IP Fragmentation or session splicing. It involves splitting a datagram into multiple fragments, which makes it difficult for an IDS to detect the true nature of the fully assembled datagram. The IDS would need to reassemble the fragments, which can be a processor-intensive task. On a busy system, the packet can slip through the IDS onto the network before it is fully reassembled.

Explanation

This technique is called IP Fragmentation or session splicing. It involves splitting a datagram into multiple fragments, which makes it difficult for an IDS to detect the true nature of the fully assembled datagram. The IDS would need to reassemble the fragments, which can be a processor-intensive task. On a busy system, the packet can slip through the IDS onto the network before it is fully reassembled.

5. If a competitor wants to cause damage to your organization, steal critical secrets, or put you out of business, they just have to find a job opening, prepare someone to pass the interview, have that person hired, and they will be in the organization. How would you prevent such type of attacks?

It is impossible to block these attacks

Hire the people through third-party job agencies who will vet them for you

Conduct thorough background checks before you engage them

Investigate their social networking profiles

To prevent attacks where competitors try to infiltrate the organization by getting someone hired, conducting thorough background checks before engaging them is the best approach. By thoroughly investigating the background of potential employees, including their education, employment history, and any criminal records, organizations can ensure that they are hiring trustworthy individuals. This will help identify any red flags or potential risks, making it harder for competitors to infiltrate the organization and carry out their malicious intentions.

Explanation

To prevent attacks where competitors try to infiltrate the organization by getting someone hired, conducting thorough background checks before engaging them is the best approach. By thoroughly investigating the background of potential employees, including their education, employment history, and any criminal records, organizations can ensure that they are hiring trustworthy individuals. This will help identify any red flags or potential risks, making it harder for competitors to infiltrate the organization and carry out their malicious intentions.