In an effort to inform and prepare you for that important network security interview, here are some of the top network security interview questions. of the individual (a common theme among my questions). Encoding is designed to protect the integrity of data as it crosses networks and systems, i.e. to keep. + Network Security Interview Questions and Answers, Question1: Why does Active FTP not work with network firewalls? Question2: Which feature on a.
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Nervous about Cyber Security interview? This article covers the top 50 information security interview questions & answers, that a cybersecurity. In this above article, we have included all the top Network Security Interview Questions that are frequently asked in an Interview with detailed answers to it. Common Interview Questions for Computer. Networking and Information Security Majors. Interviewing with companies for IT positions, whether large or small.
This site uses Akismet to reduce spam. Learn how your comment data is processed. Here is a sample of only 15 of the interview questions we have accumulated: What port does ping work over?
What does RSA stand for? What conferences do you routinely attend? How do you create SSL certificates, generically speaking? What is meterpreter? We can literally guarantee that some of these questions WILL come up during your interview.
Download the list and shine during your interview! December 13, Wireshark December 13, Henry Dalziel 3 Sep Reply. DJ 23 Feb Reply.
Thanks, DJ. Ken Johnston 23 Mar Reply. RR 4 Jul Reply. Kindly provide me the IT security Q and A. As a result, SSL can be stripped in certain circumstances, so additional protections for data-in-transit and data-at-rest are very good ideas. POST is one of the best tools available when a system will not boot. Because of how rare these events can be, unless you are on a tech bench day in and day out, reference materials such as the Motherboard manual and your search engine of choice can be tremendous assets.
Just remember to make sure that everything is seated correctly, you have at least the minimum required components to boot, and most importantly that you have all of your connections on the correct pins. Personally, with the people I know that have worked on both sides of the line it comes down to this — the difference between a Black Hat and a White Hat is who is signing the check..
Finally, when you are performing a cleanup on a box you know you want to gather information about how it got on there as well as save as much data as possible before either removing the offending infection or nuking the box. Not full blown Digital Forensics necessarily, but knowing the basics of the art will help you a great deal.
Maxim 1: Since BIOS itself is a pre-boot system, it has its own storage mechanism for its settings and preferences. In the classic scenario, simply popping out the CMOS complementary metal-oxide-semiconductor battery will be enough to have the memory storing these settings lose its power supply, and as a result it will lose its settings.
Other times, you need to use a jumper or a physical switch on the motherboard. Still other times you need to actually remove the memory itself from the device and reprogram it in order to wipe it out.
Salt at its most fundamental level is random data. When a properly protected password system receives a new password, it will create a hashed value for that password, create a new random salt value, and then store that combined value in its database. This helps defend against dictionary attacks and known hash attacks. For example, if a user uses the same password on two different systems, if they used the same hashing algorithm, they could end up with the same hash value.
However, if even one of the systems uses salt with its hashes, the values will be different. This is a doozy, and there are an enormous number of opinions for this question. Many think they are the worst thing that ever happened to the world, while others praise their existence. In the realm of security, they can be the source of extreme data leaks if handled in their default configurations. Keeping important data away from these kinds of sites is a top priority, and only connecting with those you trust is also extremely helpful.
Something they know password , something they have token , and something they are biometrics. Two-factor authentication often times uses a password and token setup, although in some cases this can be a PIN and thumbprint. Error messages oftentimes giveaway what the server is running, and many times if the website administrator has not set up custom error pages for every site, it can give it away as simply as just entering a known bad address. Other times, just using telnet can be enough to see how it responds.
Never underestimate the amount of information that can be gained by not getting the right answer but by asking the right questions.
When data is protected while it is just sitting there in its database or on its hard drive- it can be considered at rest. On the other hand, while it is going from server to client it is in-transit. Many servers do one or the other- protected SQL databases, VPN connections, etc, however there are not many that do both primarily because of the extra drain on resources.
It is still a good practice to do both however, even if it does take a bit longer. A Linux admin account root has many powers that are not permitted for standard users.
That being said, it is not always necessary to log all the way off and log back in as root in order to do these tasks. The more time a user spends with enhanced permissions, the more likely it is that something is going to go wrong — whether accidentally or intentionally.
This is another opinion question — there are a lot of different ways to protect a Wireless Access Point: There are many other options, but in a typical home environment, those three are the biggest. By this stage you are more than likely a member of a team rather than a lone figure trying to work out everything, and as a result you are now on the specialization track. You may or may not however have a pointed hat and a predisposition to rum.
They allow you to set up your network so that each port on a switch only permits one or a number that you specify computer to connect on that port by locking it to a particular MAC address.
There are a couple of different ways to do this, but the most like scenario you will run into is this: Environments that have very large numbers of systems more often than not have the capability of pushing out images via the network. This reduces the amount of hands-on time that is required on each system, and keeps the installs more consistent. Windows local accounts have a great deal of baggage tied to them, running back a long long way to keep compatibility for user accounts.
If you are a user of passwords longer than 13 characters, you may have seen the message referring to this fact. However, Active Directory accounts have a great deal of security tied onto them, not the least of which is that the system actually doing the authenticating is not the one you are usually sitting at when you are a regular user.
Confidentiality, Integrity, Availability. Confidentiality- keeping data secure. Integrity- keeping data intact. Availability- keeping data accessible. Both systems have two basic variants: This requires a bit more time to get a good baseline, but in the long term can be better on the uptake for custom attacks.
This question is a biggie. The true answer is that you contact the person in charge of that department via email — make sure to keep that for your records — along with CCing your manager as well. There may be a very important reason why a system is configured in a particular way, and locking it out could mean big trouble. Bringing up your concerns to the responsible party is the best way to let them know that you saw a potential problem, are letting them know about it, and covering yourself at the same time by having a timestamp on it.
You would be amazed how often this happens, even more so in the current BYOD environment. Still, the easiest way out of this one is to contact your manager again and have them give a yay or nay. This puts the authority and decision where it needs to be, and gives you assistance if the department needs to push back.
A lot of people would say that they are the same thing, and in a sense they would be right. However, one is a potential problem while the other is an active problem.
Think of it like this: In some areas such as major cities, that would be a major problem that needs to be resolved immediately, while in others like rural areas its more of a nuisance that can be fixed when you get around to it. In both scenarios it would be a vulnerability, while the major cities shed would be an example of an exploit — there are people in the area, actively exploiting a known problem.
That being said, a USB keylogger is easy to fit into the back of these systems without much notice while an autorun program would be able to run quickly and quietly leaving behind software to do the dirty work. At this stage, if you have physical access to the box, you own it.
You also however have enough ethics to not break into every single thing you touch, and here is where personal ethics start to become a tremendous asset provided you know where to draw the line.
Sorry about that. Far and away is a false negative. A false positive is annoying, but easily dealt with — calling a legitimate piece of traffic bad.
A false negative however is a piece of malicious traffic being let through without incident — definitely bad. Another opinion question, more along the lines of where your interests lie. Each category gets scanned separately, and a hardening index is generated for the next step. Once auditing is done, hardening is done, based on the level of security to be employed.
This is an ongoing step, as the system is checked daily. A: While the first impulse may be to immediately fix the problem, you need to go through the proper channels. Things may be as they are for a reason. Use e-mail to notify the person in charge of that department, expressing your concerns, and asking for clarification. There are two effective defensive measures.
First of all, use different names for each field of a form, as it increases user anonymity. Second, include a random token with each request. Q: You get a phone call from a very influential executive high up on the organizational chart.
He or she tells you to bend company policy to suit them and let them use their home device to do company work. What do you do? A: This is another case of letting someone higher than you make the decision. This is far outside of your realm. Let your boss deal with the higher-up. Q: Which is worse in terms of Firewall detection, and why? A false positive or a false negative?
A: A false negative is worse by far. A false positive is a simply a legitimate result that just got incorrectly flagged. But a false negative means that something bad has slipped through the firewall undetected, and that means a host of problems down the road. Q: Why are internal threats usually more effective than external threats? A: It all comes down to a question of physical location. A disgruntled soon to be ex-employee, a hacker posing as a deliveryman, even just a careless curious user, all end up having better access to the system due to them being onsite.
What Now? Furthermore, certification gives you an edge, providing potential employers with actual proof of your proficiency in network security.
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