If you’re planning on taking the Security+ exam, you should have a basic understanding of proxy servers and how proxies protect a network perimeter. For example, can you answer this question?
Q. Your organization wants to prevent users from accessing file sharing web sites. Which of the following choices will meet this need?
A. Content inspection
B. Malware inspection
C. URL filter
D. Web application firewall
More, do you know why the correct answer is correct and the incorrect answers are incorrect? The answer and explanation is available at the end of this post.
Security+ (SY0-601) Practice Test Questions
SY0-601 Practice Test Questions
Over 385 realistic Security+ practice test questions
At least 10 performance-based questions
All questions include explanations so you’ll know why the correct answers are correct,
and why the incorrect answers are incorrect.
Upgrade Your Resume with the Security+ New Version
Multiple quiz formats to let you use these questions based on the way you learn.
- Learn mode – randomized. View each of the questions in random order. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you’ll see the explanation. Click here to see how learn mode works.
- Test mode – randomized. View each of the questions in random order. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.
- Test mode – 75 random questions. View 75 random questions from the full test bank similar to how the Security+ exam has a potential maximum of 75 multiple choice questions.
Pass the First Time You Take It
Get the full bank of SY0-601 Practice Test Questions Here
Click here if you’re looking for SY0-501 Online Study Package
Using Proxy Servers
Many networks use proxies, or proxy servers, to forward requests for services (such as HTTP or HTTPS) from clients. They can improve performance by caching content and can restrict users’ access to inappropriate web sites by filtering content. A proxy server is located on the edge of the network bordering the Internet and the intranet.

All internal clients send requests through the proxy server. The proxy accepts the request, retrieves the content from the Internet, and then returns the data to the client. Most proxy servers only act as a proxy for HTTP and HTTPS. However, proxy servers can also proxy other Internet protocols, such as FTP.
Caching Content for Performance
The proxy server increases the performance of Internet requests by caching each result received from the Internet. Any data that is in the proxy server’s cache doesn’t need to be retrieved from the Internet again to fulfill another client’s request. In this context, cache simply means “temporary storage.” Cache could be a dedicated area of RAM, or, in some situations, it could also be an area on a high-performance disk subsystem.
As an example, if Lisa retrieves a web page from GetCertifiedGetAhead.com, the proxy server would store the result in cache. If Homer later requests the same page, the proxy server retrieves the page from cache and sends it to Homer. This reduces the amount of Internet bandwidth used for web browsing because the page doesn’t need to be retrieved again.
CompTIA Security+ Study Guide
The
CompTIA Security+: Get Certified Get Ahead: SY0-601 Study Guide
is an update to the top-selling SY0-201, SY0-301, SY0-401, and SY0-501 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 four 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 SY0-601 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.
Using URL Filters to Restrict Access
Proxy servers can also restrict what users can access with the use of URL filters. A proxy server URL filter examines the requested URL and chooses to allow the request or deny the request.
Many third-party companies sell subscription lists for URL filtering. These sites scour the Internet for web sites and categorize the sites based on what companies typically want to block. Categories may include anonymizers, pornography, gambling, web-based email, and warez sites. Anonymizers are sites that give the illusion of privacy on the Internet. Employees sometimes try to use anonymizers to bypass proxy servers, but a proxy server usually detects, blocks, and logs these attempts. Web-based email bypasses the security controls on internal email servers so many organizations block them. Warez sites often host pirated software, movies, MP3 files, and hacking tools.
The subscription list can be loaded into the proxy server, and whenever a user attempts to access a site on the URL filter block list, the proxy blocks the request. Often, the proxy server presents users with a warning page when they try to access a restricted page. Many organizations use this page to remind users of a corporate acceptable usage policy, and some provide reminders that the proxy server is monitoring their online activity.
Proxy servers include logs that record each site visited by users. These logs can be helpful to identify frequently visited sites and to monitor user web browsing activities.
Remember this
A proxy server forwards requests for services from a client. It provides caching to improve performance and reduce Internet bandwidth usage. Proxy servers use URL filters to restrict access to certain sites, and can log user activity.
Q. Your organization wants to prevent users from accessing file sharing web sites. Which of the following choices will meet this need?
A. Content inspection
B. Malware inspection
C. URL filter
D. Web application firewall
Answer is C. A URL filter blocks access to specific web sites based on their URLs. Proxy servers and unified threat management (UTM) devices include URL filters.
UTM devices include content inspection to identify and filter out different types of files and traffic, and malware inspection to identify and block malware.
A web application firewall (WAF) protects a web server from incoming attacks.
See Chapter 3 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide for more information on protecting the network perimeter.
Full Security+ Course
SY0-601 Full Security+ Course
Helping you Pass the First Time
This course includes all of the multiple-choice practice test questions, performance-based questions, audio, and flashcards from the but adds the CompTIA Security+: Get Certified Get Ahead: SY0-601 Study Guide within an online course.
Test your readiness with these quality materials
Here’s what you get
Random 75-question tests
Random practice tests from the all of the practice test questions in the
CompTIA Security+: Get Certified Get Ahead: SY0-601 Study Guide. All questions include explanations so you’ll know why the correct answers are correct, and why the incorrect answers are incorrect.
Performance-based Questions
These questions show you what you can expect in the live exam. They include drag and drop, matching, sorting, and fill in the blank questions.
Online Flashcard Set
Audio – SY0-601 Security+ Remember This Audio Files
Learn by Listening (MP3 downloads.)
Audio – SY0-601 Security+ Question and Answer Audio Files
Learn by Listening (MP3 downloads.)Bonus #1
The same set of questions organized by domain including questions in the
CompTIA Security+: Get Certified Get Ahead: SY0-601 Study Guide plus extra practice test questions.
Bonus #2
Audio from the end of chapter reviews from each of the chapters in the
CompTIA Security+: Get Certified Get Ahead: SY0-601 Study Guide.
Bonus #3
Access to all of the online content that is available for free to anyone that purchases the CompTIA Security+: Get Certified Get Ahead: SY0-601 Study Guide. This includes labs, extra practice test questions, and supplementary materials.Bonus #4
Extended access. Access the study materials for a total of 60 days because sometimes life happens.Bonus #5
10% off Voucher Code. Access to a coupon code that will give you 10% off your exam voucher. At the current price of $370 USD for the Security+ voucher, this can save you $37.Get the SY0-601 Full Security+ Course Here