A network administrator is monitoring the network traffic with Wireshark. Which of the following filters will she use to view the packets moving without setting a flag to detect TCP Null Scan attempts?
In Wireshark, to detect TCP Null Scan attempts, the filter used istcp.flags==0. This filter will show packets where no TCP flags are set, which is indicative of a TCP Null Scan. A TCP Null Scan is a type of network reconnaissance technique where the attacker sends TCP packets with no flags set to the target system. If the target system responds with a RST packet, it indicates that the port is closed, while no response suggests that the port is open or filtered. This method is used because some systems do not log these null packets, allowing the scan to go unnoticed.
Choose the correct order of steps to analyze the attack surface.
The correct order of steps to analyze the attack surface begins with identifying the indicators of exposure. This step involves recognizing the elements within the system that could potentially be exploited by threats. Following this, the attack surface is visualized to understand the scope and scale of potential attack vectors. Next, a simulation of the attack is conducted to assess the effectiveness of the current security measures and identify any vulnerabilities. Finally, the attack surface is reduced by implementing measures to mitigate the identified risks and vulnerabilities, thereby enhancing the overall security posture.
Which type of wireless network attack is characterized by an attacker using a high gain amplifier from a nearby location to drown out the legitimate access point signal?
The type of wireless network attack characterized by an attacker using a high gain amplifier to drown out the legitimate access point signal is known as a jamming signal attack. This attack involves the deliberate transmission of radio signals at the same frequency as the access point, thereby overwhelming and interfering with the legitimate signal. High gain amplifiers can be used to increase the strength of the jamming signal, making it more effective at disrupting the wireless communication.
The network administrator wants to strengthen physical security in the organization. Specifically, to implement a solution stopping people from entering certain restricted zones without proper credentials. Which of
following physical security measures should the administrator use?
A mantrap is a physical security mechanism designed to control access to a secure area through a small space with two sets of interlocking doors. It is an effective measure to prevent unauthorized access, as it allows only one person to pass through at a time after authentication, thereby stopping any attempt at 'tailgating' or 'piggybacking' where an unauthorized individual might try to follow an authorized person into a restricted zone.
Identify the spread spectrum technique that multiplies the original data signal with a pseudo random noise spreading code.
The spread spectrum technique that involves multiplying the original data signal with a pseudo-random noise spreading code is known as Direct Sequence Spread Spectrum (DSSS). In DSSS, the data signal is combined with a higher data-rate bit sequence, also known as a chipping code, which divides the data according to a spreading ratio. The chipping code is a pseudo-random code sequence that spreads the signal across a wider bandwidth. This process allows the signal to be more resistant to interference and eavesdropping.
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