A network administrator is reviewing logs and notices that a device with a public IP address is trying to access the web server RDP port. Which of the following tools can be used to resolve the…

The correct answer is B. nslookup. nslookup (Name Server Lookup) is a command-line tool used to query DNS servers to resolve domain names to IP addresses and vice versa - including reverse lookups from IP to domain. In this scenario, the admin has a suspicious public IP and wants to find the associated domain…

Network troubleshooting

Question

A network administrator is reviewing logs and notices that a device with a public IP address is trying to access the web server RDP port. Which of the following tools can be used to resolve the domain of the public IP address?

Options

Aarp
Bnslookup
Cipconfig
Dnetstat

How the community answered

(17 responses)

A
6% (1)
B
88% (15)
C
6% (1)

Explanation

nslookup (Name Server Lookup) is a command-line tool used to query DNS servers to resolve domain names to IP addresses and vice versa - including reverse lookups from IP to domain. In this scenario, the admin has a suspicious public IP and wants to find the associated domain name, which is exactly what nslookup does. The other options are incorrect: arp resolves IP addresses to MAC addresses on a local network; ipconfig displays a host's own network configuration (IP, subnet, gateway, DNS); netstat shows active network connections and listening ports but does not perform DNS lookups.

Topics

#nslookup#reverse DNS#DNS resolution#security monitoring

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