Methods for Securely Enabling External Access to a Web Server on a Firewall

A network technician installs a web server on the firewall.

Which of the following methods should the technician implement to allow access to outside users without giving access to the inside network?

A.

VLAN

B.

DMZ

C.

SNMP

D.

NTP.

B.

The correct answer is B. DMZ.

DMZ (Demilitarized Zone) is a network configuration that provides a secure and isolated network segment that is separated from both the internal and external networks. In a DMZ configuration, a firewall is placed between the internal network and the DMZ to provide an additional layer of security.

The web server is placed in the DMZ so that it can be accessed by outside users, while the internal network remains protected. The DMZ allows outside users to access the web server without giving them access to the internal network.

VLAN (Virtual Local Area Network) is a network configuration that allows a single physical network to be divided into multiple virtual networks. VLANs are used to improve network performance and security, but they do not provide the necessary isolation for a web server to be accessed from the outside while keeping the internal network protected.

SNMP (Simple Network Management Protocol) is a protocol used for managing and monitoring network devices. SNMP does not provide the necessary isolation for a web server to be accessed from the outside while keeping the internal network protected.

NTP (Network Time Protocol) is a protocol used for synchronizing the clocks of networked devices. NTP does not provide the necessary isolation for a web server to be accessed from the outside while keeping the internal network protected.

In summary, the DMZ is the appropriate method for allowing access to a web server from outside users while keeping the internal network protected.