What are the main reasons why a VPN is the right solution for protecting the network perimeter? Do they also provide protection for mobile devices? Explain the difference between an access control list (ACL) that is used in routers to block traffic and firewalls. What similarities do they share?

What are the main reasons why a VPN is the right solution for protecting the network perimeter? Do they also provide protection for mobile devices? Explain the difference between an access control list (ACL) that is used in routers to block traffic and firewalls. What similarities do they share?

Management Of Information Security

6th Edition

ISBN:9781337405713

Author:WHITMAN, Michael.

Publisher:WHITMAN, Michael.

Chapter12: Protection Mechanisms

Section: Chapter Questions

Problem 5RQ

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Concept explainers

VLAN

VLAN stands for Virtual Local Area Network, and it is created from one or more local area networks. A Virtual Local Area Network (VLAN) is a customized network made up of one or more LANs. It allows a set of devices from different networks to be converted into a single logical network. As a result, a virtual LAN that is managed similarly to a physical LAN emerges.

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What are the main reasons why a VPN is the right solution for protecting the network perimeter? Do they also provide protection for mobile devices?

Explain the difference between an access control list (ACL) that is used in routers to block traffic and firewalls. What similarities do they share?

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Remember that the reordering and reassembly of packets happens in the transport stage of the TCP/IP protocol suite. Firewalls are often employed on lower layers, such as the Internet or the data layer. Whether a firewall relies on stateful inspection, how does it know if a connection has been severed or lost?
Note that the TCP/IP protocol suite's transport stage is where reassembly and reordering of packets occurs. A firewall may function at the Internet or data layer level of abstraction. If a traffic stream is corrupted or removed, a stateful inspection firewall will be unable to learn anything about it.
What are the main reasons why a VPN is the right solution for protecting the network perimeter? Do they also provide protection for mobile devices? (2-3 paragraphs) In no less than 250 words, explain the difference between an access control list (ACL) that is used in routers to block traffic and firewalls. What similarities do they share?
Do not forget that the TCP/IP protocol suite's transport stage is where reassembly and reordering of packets occurs. If necessary, a firewall may function at the Internet or data layer level of abstraction. If a traffic stream is corrupted or removed, a stateful inspection firewall will not be able to learn anything about it.
What is the role of a firewall in the context of network protocols?
The security of a virtual private network (VPN) surpasses that of public Wi-Fi (VPN). When using a VPN, how does the "tunnel mode" function work?
When it comes to protecting sensitive information across a network, what are the key differences between symmetric and asymmetric encryption protocols (PKI, TLS, SSL)?
What are the names of the many kinds of firewalls that exist, apart from those based on network routers?
The Transport layer is where firewalls do their function. In other words, they may execute the duties of lower-layer devices, like routers. Is that really the case? Could you provide a quick explanation of how firewalls may be used as routers?
How do secure network protocols like SSL/TLS work to provide encryption and authentication for secure data transfer on the internet?
How do VPN protocols like OpenVPN and IPSec work to provide secure communication over public networks? What are the differences between these two protocols in terms of security and implementation?
Explain how native authentication and authorization services are implemented step-by-step when a web client seeks access to protected resources on a web server. What are the two strongest reasons for layered protocols? Give examples to back up your claim.