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Engineering
Computer EngineeringNetwork+ Guide to Networks (MindTap Course List)8th Edition
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Which of the following is often used to secure data traveling over VPNs that use L2TP? a. PPTP b. PPPoE c. Kerberos d. SSH e. IPsec

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Network+ Guide to Networks (MindTa...

8th Edition
Jill West + 2 others
Publisher: Cengage Learning
ISBN: 9781337569330

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Network+ Guide to Networks (MindTa...

8th Edition
Jill West + 2 others
Publisher: Cengage Learning
ISBN: 9781337569330
Chapter C, Problem 26MC
Textbook Problem
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Which of the following is often used to secure data traveling over VPNs that use L2TP?

  1. a. PPTP
  2. b. PPPoE
  3. c. Kerberos
  4. d. SSH
  5. e. IPsec

Program Description Answer

IPsec is used to secure the data travelled over VPNs that uses L2TP.

Hence, the correct answer is option “E”.

Explanation of Solution

IPsec:

  • In the OSI model, IPsec works at a Network layer that defines authentication, encryption, and key management for TCP/ IP transmissions.
  • It is an enhancement to IPv4 and it is native to IPv6.
  • In all IP packets header, IPsec adds security information and encrypts the data payload.
  • L2TP (Layer 2 Tunneling Protocol) is a VPN (Virtual Private Network) tunneling protocol based on technology developed by Cisco and standardized by the ETF.
  • L2TP connects two routers, a client and a remote access server, or a router and a remote access server.
  • Normally, L2TP is executed with IPsec for security, and the combination of IPsec/ L2TP considered secure and suitable for most situation.

Explanation for incorrect options:

PPTP:

PPTP stands for Point to Point Tunneling Protocol is outdated and is no longer considered secure...

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