Get Certified Get Ahead

Search Site

Our goal is to help you Get Certified and Get Ahead in your career and your life. If you want to get certified, you’ll find that many of the free blog posts on this site can help you.

 

List of recent posts.

Security+ SY0-501 Study Guide Now Available


Key Security+ blog posts

A listing of over 100 blog posts on the Security+exam. Posts are organized into categories such as:

 

https://youtu.be/ttbnkYyEwx0



Security+ Full Access Package

Get Certified Get Ahead Security+

Pass the First Time!

Up-to-date Content

New multiple-choice and performance-based questions added regularly

Pass the first time with quality practice test questions, performance-based questions, flashcards, and audio.

Buy The Full Access Study Package Today

60 Days Access For Only $65.97

Need more time? You can easily renew for another 60 days at a significantly reduced price.

All materials are available online shortly after making your payment.

Get the Security+ Full Access Study Package Here

Our online Security+ study materials are the perfect complement to the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. They can also be used to help ensure you're ready no matter what study guide you're using.

This exam is expensive.

Make sure you're ready before exam day. 

Here's what you'll get:
  • All of the multiple-choice questions from the best-selling CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. See a demo here. All questions have full explanations so you'll know why the correct answers are correct and why the incorrect answers are incorrect.
  • Over 40 new multiple-choice questions we've added after publishing the study guide.
  • Over 30 performance-based questions. See a demo here.
  • All of the flashcards from the study guide. View them in any Web browser.
  • All of the audio from the study guide. Listen to a sample here.
  • Access to a free discount code for 10% off your Security+ voucher.

Buy The Full Access Study Package Today

60 Days Access For Only $65.97

All materials are available online shortly after making your payment.

Get the Security+ Full Access Study Package Here

Recent Posts

  • Understanding Advanced Security Devices

    Understanding Advanced Security Devices

    If you’re planning to take the SY0-501 version of the Security+ exam, you should have a basic understanding of advanced security devices used to secure networks. For example, can you answer this practice test question? Q. Of the following choices, what can …
  • Using Security Tools

    Using Security Tools

    Several security tools are available for use by security professionals and attackers alike. If you’re planning to take the Security+ SY0-501 exam, you should have basic understanding of using appropriate software tools to assess the security posture of an organization such as using command …
  • Early Detection Saves Lives

    Early Detection Saves Lives

    Chances are that you know someone that has breast cancer. Even if you and the other person don’t know it. However, in this case ignorance is not bliss. What you and others don’t know can kill. About six months ago, I …
  • Secure Staging Deployment Concepts

    Secure Staging Deployment Concepts

    Another concept within secure systems design is secure staging and deployment concepts. If you’re planning to take the SY0-501 version of the Security+ exam, you should be able to explain the importance of secure staging deployment concepts. These include sandboxing, controlling the …
  • DER and CER Certificates

    DER and CER Certificates

    What is the difference between DER and CER encoded certificates?  CompTIA added these into the SY0-501 version of the Security+ exam, so if you plan to take it, you should have a good understanding of these encoding types. The primary differences are: Canonical …
  • Advanced Attacks and Countermeasures

    Advanced Attacks and Countermeasures

    Attackers lurk almost everywhere. If you have computer systems, you can’t escape them. However, you can be proactive in identifying the different types of attacks and take steps to prevent them, or at least prevent their effectiveness. If you’re planning …
  • 7 Steps to Security+ (SY0-501) Certification

    7 Steps to Security+ (SY0-501) Certification

    The CompTIA Security+ certification is a popular certification within the IT field. One IT hiring manager told me that if a résumé doesn’t include the Security+ certification, or a higher-level security certification, he simply sets it aside. He won’t even talk to …
  • Security+ and Subtle Phrases

    Security+ and Subtle Phrases

    If you’re planning to take the SY0-501 version of the Security+ exam, you may run across questions with subtle word choices. For example, a question could have one answer correct. However, a subtle change in a phrase in a question would make …
  • Firmware/Hardware Security

    Firmware/Hardware Security

    If you’re planning to take the Security+SY0-501 exam, you should have a basic understanding of implementing secure systems design. This includes firmware/hardware security,  operating systems, and peripherals. For example, can you answer this question? Q. What functions does an HSM include? A. Reduces …
  • Using Command-Line Tools

    Using Command-Line Tools

    Command-line tools can be invaluable when troubleshooting or analyzing systems. If you know how to use them, they can make many tasks easier.  More, if you’re planning to take the SY0-501 version of the Security+ exam, you should have a basic understanding …
  • Memory Management Techniques

    Memory Management Techniques

    Many application attacks take advantage of vulnerabilities in a system’s memory. Because of this, it’s important for developers to use secure memory management techniques within their code.  If you’re planning to take the SY0-501 version of the Security+ exam, you should have a …
  • Free Cyber Security Tips

    Free Cyber Security Tips

    Did you know that you can get free cyber security tips and alerts from US-CERT (United States Computer Emergency Readiness Team)? These pop into my inbox regularly, and many are very informative. Here are a few, copied and pasted from …
  • Symmetric Encryption Concepts

    Symmetric Encryption Concepts

    Symmetric encryption is a type of encryption that uses a single key to encrypt and decrypt data. If you’re planning to take the SY0-501 exam, you should have a basic understanding of cryptography concepts such as cipher types and cipher modes. …
  • Understanding Secure Coding Concepts

    Understanding Secure Coding Concepts

    Secure coding concepts are important for application developers to understand. Additionally, IT security managers who manage development projects should understand these concepts, even if they aren’t writing the code. If you’re planning to take the SY0-501 exam, you should have …
  • A Tale of Two Test Takers

    A Tale of Two Test Takers

    It was the best of test taking days. It was the worst of test taking days. It was the age of critical thinking. It was the age of memorization. It was a time of celebration and elation. It was a …

Now Available
CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide

 

Using Security Tools

Posted by on November 6 in Security+ | 0 comments

Several security tools are available for use by security professionals and attackers alike. If you’re planning to take the Security+ SY0-501 exam, you should have basic understanding of using appropriate software tools to assess the security posture of an organization such as using command line tools.

For example, can you answer this practice test question?

Q. You suspect that an attacker has been sending specially crafted TCP packets to a server trying to exploit a vulnerability. You decide to capture TCP packets being sent to this server for later analysis and you want to use a command-line tool to do so. Which of the following tools will BEST meet your need?

A. Wiredump

B. Tcpdump

C. Netcat

D. Nmap

More, do you know why the correct answer is correct and the incorrect answers are incorrect? The answer and explanation are available at the end of this post.

Some tools are useful when performing vulnerability scans and penetration tests. Three tools discussed in this post are tcpdump, Nmap, and Netcat.

Using Security Tools

Tcpdump

Tcpdump is a command-line packet analyzer (or protocol analyzer). It allows you to capture packets like you can with Wireshark. The difference is that Wireshark is a Windows-based tool and tcpdump is executed from the command line. Many administrators use tcpdump to capture the packets and later use Wireshark to analyze the packet capture.

Kali Linux includes tcpdump, but you won’t find it on Windows systems. As with most Linux command-line tools, tcpdump is case sensitive. You need to enter tcpdump in all lowercase. Additionally, the switches must be entered with the proper case. For example, -c (lowercase c) represents count and indicates the capture should stop after receiving the specified number of packets. However, -C (uppercase C) represents file size and indicates the maximum size (in millions of bytes) of a packet capture. When the file reaches this size, tcpdump closes it and starts storing packets in a new file.

CompTIA Security+ Study Guide

The 501 Version of the Study Guide

The CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide is an update to the top-selling SY0-201, SY0-301, and SY0-401 study guides, which have helped thousands of readers pass the exam the first time they took it.  It includes the same elements readers raved about in the previous three versions.

Each of the eleven chapters presents topics in an easy to understand manner and includes real-world examples of security principles in action.

You’ll understand the important and relevant security topics for the Security+ exam, without being overloaded with unnecessary details. Additionally, each chapter includes a comprehensive review section to help you focus on what’s important.



Over 300 realistic practice test questions with in-depth explanations will help you test your comprehension and readiness for the exam. The book includes:

  • A 75 question pre-test
  • A 75 question post-test
  • Practice test questions at the end of every chapter.

Each practice test question includes a detailed explanation to help you understand the content and the reasoning behind the question. You’ll be ready to take and pass the exam the first time you take it.

If you plan to pursue any of the advanced security certifications, this guide will also help you lay a solid foundation of security knowledge. Learn this material, and you’ll be a step ahead for other exams. This SY0-501 study guide is for any IT or security professional interested in advancing in their field, and a must-read for anyone striving to master the basics of IT security.

Kindle edition also available.

Nmap

Nmap is a network scanner. The graphical side of Nmap is Zenmap.

It includes many capabilities, including identifying all the active hosts and their IP addresses in a network, the protocols and services running on each of these hosts, and the operating system of the host. When running the command, you include the scan type(s), optional options, and target specifications. As an example, consider the following command:

nmap -T4 -A -v 192.168.0.0/24

Notice that it has three switches, -T4, -A, and -v:

  • T4. T4 refers to the speed of the scan. Valid switches are T0 through T5 with T0 being the slowest and T5 being the fastest. Faster scans are likely to be detected, while slower scans may not be detected.
  • A. The -A switch indicates the scan should include OS detection, version detection, script scanning, and traceroute.
  • -v. The -v switch indicates the verbosity You can get more data output by using -vv or -vvv.

Netcat

Administrators often use Netcat for remotely accessing Linux systems. It doesn’t include native encryption so it’s common to use SSH to secure the session. Also, Netcat can easily be used for banner grabbing. The following is a sample command used for banner grabbing:

echo “” | nc -vv -n -w1 72.52.206.134 80

It uses the netcat command (nc) along with some switches: -vv for a verbose output, -n to not resolve host names, -w1 to wait no more than 1 second for a reply. The command connects to port 80 of the system with an IP address of 72.52.206.134. The echo “” sends a blank command to the server and the pipe symbol ( | ) tells Netcat to send the command after establishing the connection.

Some other uses of Netcat include:

  • Transferring files. One of the online labs for Chapter 3 shows how to create a chat session between two Once this session is open, you can use the connection to copy files between the systems.
  • Port scanner. You can use Netcat to run a port scan against a single IP address. It allows you to specify the range of ports, such as 10 through 1024 and randomize the ports scanned to evade detection. It also supports waiting longer periods of time between port checks, again, to evade detection.

Remember this

Tcpdump is a command-line protocol analyzer. It can create packet captures that can then be viewed in Wireshark. Nmap is a sophisticated network scanner that runs from the command line. Netcat can be used to remotely administer systems and also gather information on remote systems.


Full Security+ Course

SY0-501 Full Security+ Course

Helping you Pass the First Time

Online access includes all of the content from the

CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide

  • Introduction
  • About the exam (including information on the number of questions, test duration, passing score, types of questions and more. Also includes a listing of the exam objectives)
  • 75 question pre-assessment exam
  • Mastering Security Basics (full content from Chapter 1 of the study guide including the exam topic review and 15 practice test questions)
  • Understanding Identity and Access Management (full content from Chapter 2 of the study guide including the exam topic review and 15 practice test questions)
  • Exploring Network Technologies and Tools (full content from Chapter 3 of the study guide including the exam topic review and 15 practice test questions)
  • Securing Your Network (full content from Chapter 4 of the study guide including the exam topic review and 15 practice test questions)
  • Securing Hosts and Data (full content from Chapter 5 of the study guide including the exam topic review and 15 practice test questions)
  • Comparing Threats, Vulnerabilities, and Common Attacks (full content from Chapter 6 of the study guide including the exam topic review and 15 practice test questions)
  • Protecting Against Advanced Attacks (full content from Chapter 7 of the study guide including the exam topic review and 15 practice test questions)
  • Using Risk Management Tools (full content from Chapter 8 of the study guide including the exam topic review and 15 practice test questions)
  • Implementing Controls to Protect Assets (full content from Chapter 9 of the study guide including the exam topic review and 15 practice test questions)
  • Understanding Cryptography and PKI (full content from Chapter 10 of the study guide including the exam topic review and 15 practice test questions)
  • Implementing Policies to Mitigate Risks (full content from Chapter 11 of the study guide including the exam topic review and 15 practice test questions)
  • 75 question post-assessment exam
  • Glossary

Get the SY0-501 Full Security+ Course Here


Test your readiness with these quality materials

Random 75-question tests

Random practice tests from the all of the practice test questions in the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect.

3 sets Performance-based Questions

Three new sets of performance-based questions with a total of 30 questions. These new questions use a new testing engine that includes realistic drag and drop, matching, sorting, and fill in the blank questions.

Flashcard Set

  • 494 Online Security+ Glossary Flashcards
  • 222 Online Security+ Acronyms Flashcards
  • 223 Online Security+ Remember This Slide from the popular CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide

Audio - SY0-501 Security+ Remember This Audio Files

Learn by Listening. Over one hour and 20 minutes of audio (MP3 downloads.)

Audio - SY0-501 Security+ Question and Answer Audio Files

Learn by Listening. Over two hours hour and 53 minutes of audio (MP3 downloads.)

Bonus #1

Audio from the end of chapter reviews from each of the chapters in the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. Over one hour and 40 minutes of additional audio.

Bonus #2

Access to all of the online content that is available for free to anyone that purchases the CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide. This includes labs, extra practice test questions, and supplementary materials

Bonus #3 

Access the study materials for a total of 60 days because sometimes life happens.

Get the SY0-501 Full Security+ Course Here

Q. You suspect that an attacker has been sending specially crafted TCP packets to a server trying to exploit a vulnerability. You decide to capture TCP packets being sent to this server for later analysis and you want to use a command-line tool to do so. Which of the following tools will BEST meet your need?

A. Wiredump

B. Tcpdump

C. Netcat

D. Nmap

Answer is B. The tcpdump command-line tool is the best choice of the given answers. It is a command- line packet analyzer (or protocol analyzer) and its primary purpose is to capture packets.

Wiredump isn’t a valid tool name. Wireshark (not included as an answer choice) is a graphic-based packet analyzer that can be started from the command line, but tcpdump includes more command-line options than Wireshark.

Netcat is useful for remotely accessing systems and can be used for banner grabbing, but it doesn’t capture packets.

Nmap analyzes packets during a scan. It can also use Npcap, the Nmap Project’s packet sniffing library, but Nmap isn’t the best choice to capture packets.

See Chapter 8 of the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide for more information on using security tools.

CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide

Subscribe To Our Newsletter

Join our mailing list and get a free excerpt of the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide.  This excerpt includes the introduction and Chapter 1. 

You have Successfully Subscribed!

Get Certified Get Ahead is a participant in the Amazon Services LLC Associates Program,
an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Copyright © 2015 Get Certified Get Ahead. All Rights Reserved.