Top 10 Penetration tester Interview Questions

Hello Friends, today i am going to share Top 10 Penetration tester Interview Questions that are asked during Penetration tester Job interviews. But first of all let’s understand who are Penetration testers. Penetration testing experts are those who understand how to protect a network or system and find flaws in network or application security. You’ll need to know how to use the tools for Penetration testing, but you’ll also need to understand how hackers access private systems and what you can do to prevent unauthorized access to network systems.

Here are Top 11 Web application Penetration Testing tools that every penetration tester must have used or tried :

• Top 11 Open Source Application Penetration Testing Tools

When you have an Penetration tester profile interview, here are some important questions you might get asked in the field. Below are Top 10 Penetration tester Interview Questions :

Question 1: What is trace route? How does tracerout or tracert work?

Ans : traceroute and tracert work to determine the route that goes from the host computer to a remote machine. It’s used to identify if packets are redirected, take too long, or the number of hops used to send traffic to a host.

Read more about Trace route:

• Trace route Tutorial for Hackers

Question 2  : What are the strengths and differences between Windows and Linux Operating Systems?

Ans: This question can also mean that they are looking for any biased with one system or another. Linux has some commands that Windows does not, but Windows is not open source and does not suffer from recent hacks such as Heartbleed Vulnerability.

Read more about Heartbleed Vulnerability :

• HeartBleed Vulnerability : Explained and Remediation

Also you can read about best operating system for Hackers at:

• Best Operating System for Hackers

Question 3 : Do you filter ports on the firewall?

Ans : You can filter ports on the firewall to block specific malware and protect the network from unnecessary traffic. For instance, some companies block port 21, the FTP port, when the company does not host or allow FTP communications.

Read more about Firewalls :

• Firewalls Unleashed – Hackers Guide

Question 4: What kind of penetration can be done with the Diffie Hellman exchange?

Ans : A hacker can use the man in middle attack with the Diffie Hellman exchange since neither side of the exchange is authenticated. Users can use SSL or encryption between messages to add some kind of security and authentication.

Question 5: How do you add security to a website?

Ans : The HTTP protocol allows for security behind authenticated pages and directories. If the user does not enter the right username and password, the server returns a 403 authentication HTTP error. This protects from unauthorized users.

Question 6: What are some ways to avoid brute force hacks?

Ans : You can stop authentication after a certain amount of attempts and lock the account. You can also block IP addresses that flood the network. You can use IP restrictions on the firewall or server.

Question 7: How can you encrypt email messages?

Ans : You can use PGP to encrypt email messages or some other form of a public private key pair system where only the sender and the recipient can read the messages.

Question 8 : Do you do any scripting?

Ans : A good penetration tester knows how to write scripts that automate some of the testing. You can use almost any language to write scripts. Describe the script you wrote and the languages you used. Get ready for the interviewer to ask more details.

Question 9: What type of tools are there out there for packet sniffing?

Ans : Wireshark is probably the most common packet sniffing tool. This program can help you find odd traffic across the network or identify a program that is sending traffic silently from a host.

Read more about Sniffing :

• Sniffing Network Traffic – Beginners Guide

Question 10 : What is the difference between asymmetric and symmetric encryption?

Ans: Symmetric encryption uses the same key for decryption and encryption. Asymmetric uses different keys.

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