A penetration tester performs a service enumeration process and receives the following result after scanning a server using the Nmap tool: Based on the output, which of the following services provides

The correct answer is D. File sharing. The open port 2049/tcp indicates that the Network File System (NFS) service is running. NFS is commonly used for file sharing in Unix/Linux environments. If not properly secured, NFS can be vulnerable to a variety of attacks, such as unauthorized access to shared files and direct

Submitted by amina.ke· Mar 6, 2026Vulnerability discovery and analysis

Question

A penetration tester performs a service enumeration process and receives the following result after scanning a server using the Nmap tool:

Based on the output, which of the following services provides the best target for launching an attack?

Options

ADatabase
BRemote access
CEmail
DFile sharing

How the community answered

(37 responses)

A
5% (2)
B
22% (8)
C
14% (5)
D
59% (22)

Explanation

The open port 2049/tcp indicates that the Network File System (NFS) service is running. NFS is commonly used for file sharing in Unix/Linux environments. If not properly secured, NFS can be vulnerable to a variety of attacks, such as unauthorized access to shared files and directories, or privilege escalation by exploiting misconfigurations or vulnerabilities within the NFS service. This makes it a prime target for attackers.

Topics

#Service enumeration#Nmap#Attack surface analysis#Vulnerability identification

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