Question
A user notifies a network administrator about losing access to a remote file server. The network administrator is able to ping the server and verifies the current firewall rules do not block access to the network fileshare. Which of the following tools would help identify which ports are open on the remote file server?
- A. dig
- B. nmap Correct
- C. tracert
- D. nslookup
Explanation
nmap is a port scanner that probes a host and reports which TCP and UDP ports are open, closed or filtered, so it shows whether the file-sharing service port on the server is listening. dig and nslookup query DNS, and tracert shows the routing path; none of them reports open ports on a host.
