Misconfigured Network Device and Remediation Steps
Question
An analyst receives an alert from the SIEM showing an IP address that does not belong to the assigned network can be seen sending packets to the wrong gateway.
Which of the following network devices is misconfigured and which of the following should be done to remediate the issue?
Answers
Explanations
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A. B. C. D.B.
The correct answer to this question is option B - Router; place the correct subnet on the interface.
Explanation:
The scenario describes a situation where an IP address that is not part of the assigned network is sending packets to the wrong gateway. This indicates that the network is experiencing a misconfiguration, which needs to be remediated. To identify the misconfigured network device, we need to understand how the network operates and what role each network device plays.
A firewall is a network security device that monitors and filters incoming and outgoing network traffic based on a set of predefined rules. While a firewall can prevent unauthorized access to a network, it does not necessarily control the routing of network traffic. Therefore, the misconfiguration is unlikely to be caused by the firewall. The suggested remediation of implementing an Access Control List (ACL) on the interface is also not relevant to the scenario.
A switch is a network device that connects network devices together and helps to transmit data between them. While a switch can be configured to operate as an access port or trunk port, the misconfiguration described in the scenario is not likely to be caused by a switch. Therefore, the suggested remediation of modifying the access port to trunk port is not relevant to the scenario.
A proxy is a network device that acts as an intermediary between a client and a server, often used for web traffic filtering and caching. The scenario does not mention anything about the use of a proxy, so it is unlikely to be the cause of the misconfiguration. The suggested remediation of adding the correct transparent interface is also not relevant to the scenario.
A router is a network device that connects multiple networks together and controls the flow of network traffic between them. In the scenario, the IP address that does not belong to the assigned network is seen sending packets to the wrong gateway. This suggests that the router is misconfigured and needs to be remediated. The suggested remediation of placing the correct subnet on the interface is relevant in this scenario as it will help to ensure that only traffic from the assigned network is allowed to pass through the router.
In conclusion, the misconfigured network device in this scenario is the router, and the remediation that should be done is to place the correct subnet on the interface.
