COMPUTER THREATS SECURITY
WHAT IS A FIREWALL IN NETWORK SECURITY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Domain controller
|
|
|
User workstations
|
|
|
Backup server
|
|
|
FTP server
|
Detailed explanation-1: -Network components and services like the domain name system (DNS), file transfer protocol (FTP) server, web servers, proxy servers, etc., are typically placed inside a DMZ.
Detailed explanation-2: -Any service provided to users on the public internet should be placed in the DMZ network. External-facing servers, resources and services are usually located there. Some of the most common of these services include web, email, domain name system, File Transfer Protocol and proxy servers.
Detailed explanation-3: -Resources commonly placed in the DMZ include, Web servers, Mail servers, FTP servers, and VoIP servers.
Detailed explanation-4: -A DMZ is a network between the protected network and the external network. (See Figure 1) The DMZ provides an extra layer of security and is a good place to locate hosts that provide web, ftp and smtp services. Servers that house these types of protocols are referred to as bastion hosts.
Detailed explanation-5: -All publicly-accessible hosts are inside the DMZ. A second firewall protects the private network from the internet.