Palo Alto Networks, Inc. VPN Mock Interview

To help you prepare for a VPN interview at Palo Alto Networks, here are 30 interview questions and answer examples.

Palo Alto Networks was written by and updated on September 7th, 2021. Learn more here.

Question 1 of 30

Can you describe how ISAKMP and IKE protocols work?

How to Answer

As the interview progresses, the technical questions you will be asked will become more difficult and specific to Palo Alto Networks' operations. One way you can prepare for this is to research their operations and try to learn as much as you can about the technology they employ, their processes, and some of the products they have incorporated into their IT strategy. Being familiar with this will help you formulate your answers during the interview. Practicing these questions will also assist you in being better prepared.

Written by William Swansen on September 13th, 2021

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List of Palo Alto Networks VPN Interview Questions & Answers

Click on the interview question to open our answer advice and answer examples

  • 1.

    Can you describe how ISAKMP and IKE protocols work?

  • 2.

    What Is Ike, and what communication port does this protocol use?

  • 3.

    What Is meant by the term "╦ťTransform Set'?

  • 4.

    What are the different modes for Secure Sockets Layer Virtual Private Network or SSL VPN?

  • 5.

    What Is a Cisco Easy VPN, and what are its benefits?

  • 6.

    What commands do you use to check the status of a VPN tunnel's phases 1 & 2?

  • 7.

    Here at Palo Alto Networks we use DMVPN. Are you familiar with this technology, and if so, and you provide me a brief explanation?

  • 8.

    What is a Diffie-Hellman key, and how does it work?

  • 9.

    Can you explain the difference between static crypto maps and dynamic crypto maps?

  • 10.

    Can you explain Next Hop Resolution Protocol (NHRP) and how it will be used in a VPN at Palo Alto Networks?

  • 11.

    Can you walk me through the steps in an SSL handshake?

  • 12.

    Are there more than one SSL VPN mode, and if so, can you describe them?

  • 13.

    Can you define SSL VPN and discuss how it differs from IPsec VPN?

  • 14.

    What Are Crypto Maps, and how are they used?

  • 15.

    What Are Security Associations (SA), and how are they used?

  • 16.

    Palo Alto Networks strongly advocates for using VPNs to protect users and data. When deciding whether to use VPN, what items do you consider? What do you then consider when selecting, deploying, and maintaining VPN?

  • 17.

    Can you explain how the two IPsec protocol headers are used in a VPN?

  • 18.

    In what scenarios are site-to-site and remote access VPN employed?

  • 19.

    Can you explain the differences between transport and tunnel mode data transmission?

  • 20.

    What are symmetric and asymmetric encryption, and how is each used?

  • 21.

    Can you discuss the differences between authentication, confidentiality, and integrity in the context of VPNs and network security?

  • 22.

    In your opinion, is a VPN a long-term solution or a short-term stopgap to an immediate security threat?

  • 23.

    What are some of Palo Alto Networks' security vulnerabilities that a VPN will address?

  • 24.

    When vetting VPN Product Vendors, what are some of the tougher questions you ask them to qualify their solutions and determine if they are appropriate for our requirements here at Palo Alto Networks?

  • 25.

    What are some of the performance issues raised by the use of a VPN?

  • 26.

    What are some of the crypto-related best practices you would recommend, related to the operation of a VPN here at Palo Alto Networks?

  • 27.

    Are there applications or environments in which VPNs may be detrimental and cause more harm than they do good?

  • 28.

    What are some of the firewall issues relevant to the selection and deployment of a VPN?

  • 29.

    What are the reasonable expectations as to what a VPN can do to protect Palo Alto Networks' network and proprietary information?

  • 30.

    VPNs have a reputation for solving most, if not all, network security issues. Are there any unreasonable expectations for a VPN or issues it doesn't address?