Introduction to Wireless Security

Wireless networks are complex; there are many technologies and protocols required to offer a stable wireless network to end-users. It also sounds scary to transmit data through the air, where everyone can listen to it.

Wired networks feel secure; after all, you can’t easily listen to this traffic. You could connect to a switchport, but the only unicast traffic you’ll see is the traffic between your computer and the switch. You will see multicast and broadcast traffic from within the VLAN, though.

Anyone can see the data that travels through the air , which is why wireless security is so important. Someone can monitor wireless traffic, and you won’t even notice that it’s happening.

In the 802.11 service sets lesson , you learned how wireless clients associate with APs. All wireless traffic has to go through the AP, instead of directly between the sender and receiver. Anyone in range of the AP or other wireless clients can receive the signal .

This can be a problem. For example, imagine we have a user who sends a password to a remote server:

Wireless Attacker Captures Password

The wireless user transmits a password to the remote server. Because the attacker is in range of our wireless network, he can capture the password.

How can we securely transmit data through the air and ensure that it remains private and is not tampered with? The 802.11 standard offers security mechanisms that provide authentication , encryption, and integrity . In this lesson, I’ll give you an overview of these three items.


To use a wireless network, the wireless client has to discover a BSS. APs advertise beacons with their SSID, and the wireless client selects the wireless network she wants to connect to and associates with the AP. By default, authentication is open, which means everyone is welcome.

Wireless Open Authentication

You probably want to authenticate your wireless clients, though. If you have a corporate network, you don’t want just anyone to join the network. Only legitimate users should be able to use your wireless network. After all, the wireless network might be connected to the wired network where you can access all corporate resources.

What if you have guest users? If you want to offer a guest wireless network, you should configure a second SSID, linked to a VLAN with restricted access .

APs can authenticate wireless clients before they associate with the AP . This keeps rogue clients away from our wireless network.

There are many options for wireless authentication. You are probably familiar with the most common choice, a pre-shared key . We configure the pre-shared key on the AP. Any wireless client that wants to join the wireless network has to enter the pre-shared key.

Windows 10 Connect To Wireless Network

What happens when someone steals one of the wireless clients? That’s a problem because of two main reasons:

  • And can now connect to the wireless network from any device.
  • And can decrypt traffic from other clients connected to the same wireless network.
  • You need to configure a new pre-shared key on the AP and all wireless clients.

There are stronger authentication options where we ask users for a username and password instead. This helps. When a device is stolen, at least you can pinpoint which username was compromised and reset the password for that username. You don’t have to reset the pre-shared key and configure it on all wireless clients.

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Forum Replies

Hi, I really enjoy the lessons.

I have two related questions, please.

In the lesson, you said

“The wireless client can use this to verify that it’s communicating with a legitimate AP.”

So that’s mean the attacker can’t make a certificate for its rogue AP? or it’s possible but difficult to make?

Who originate these certificates? is it the 802.11 standard or the Manufacture of the AP? In other words, where do these certificates come from?

I appreciate your effort.

Hello Ameen

Certificates are a widely used method for authentication in a very broad area of application. Some examples include:

  • ASA Site to Site IPSec VPN
  • Cisco Anyconnect (self signed)
  • Cisco Anyconnect local certificates

A certificate, or digital certificate, or more correctly referred to as a public key certificate, is a method used to prove the ownership of a public key. A digital certificate includes information about the key, information about the identity of its owner, as well as the digital signature of the entity that has verified the certificate’s

Thanks a lot, Mr. Lazaros.

Guys, the lesson is great, but I would like to suggest two improvements:

1 - Add the “full wireless handshake”

In this image here , you share the phases “Authentication” and “Association”. But I think you should introduce the “Beacon” and “Probe” phases as well, and quickly introduce them, just like here . I’m following the CCNA 200-301 course and, at this point, beacon and probes were not introduced yet. Adding all the phases will make easier for the student to understand exactly where/when the authentication phase occurs.

2 - Improve wording

Hello Rarylson

Thanks for your feedback! I’ll let @ReneMolenaar know to take a look and consider your suggestions.

2 more replies! Ask a question or join the discussion by visiting our Community Forum


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Wireless Network Security

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Network Security PPT: Protect Your Digital Assets in Today's Cyber Landscape

Network Security PPT: Protect Your Digital Assets in Today's Cyber Landscape

Sheikha Tickoo


Have you heard about the 2014 hacking incident with Sony Pictures' Network? Do you remember how hackers tampered with the U.S. voting system in 2016? If you have not heard about it, it has been a network security breach by hackers. They may have found a loophole in the network security, and using that security gap; they breached the data. Thus, it is crucial to implement strict security measures to protect the network from unwanted access. In this blog, we will delve deeper into network security, and you will find the 10 best network security ppts for your use.

What is meant by Network Security?

The meaning and understanding of network security may vary from person to person. However, the simple and standard definition of it according to computer networking is shielding and safeguarding critical information, client data, devices, and various organizational processes. Nowadays, cyber crimes have increased when the internet is standard, and every other person has access to it. Network security acts as a vigilant castle guard, defending against a variety of dangers and threats. Consider it an all-encompassing shield that protects your network from breaches, unauthorized access, and harmful activity. It contains a number of technology, process, and configuration combinations that can function together to maintain your computer system healthy and secure. Access control is critical to network security. Access control, like enabling only authorized individuals to enter a limited area, guarantees that only trustworthy users can access your network resources. Envision network security as a holistic shield that protects the network by combining all the latest technologies, processes, and settings.

Let's have a look at top Network security ppts.

Template 1: Complete Network Security

Enhance your network security strategy with our comprehensive Network Security PowerPoint Presentation Slides. This visually engaging deck covers essential topics, including risk assessment, mitigation strategies, benefits of network security, and automation's role. It provides a checklist, a 30-60-90-day plan, and budgeting guidance for implementation. Visualize threats with a real-time tracking dashboard. With 81 customizable slides, this complete deck is tailored to your business needs. Download now to fortify your network defenses and protect your electronic devices, data, and networks. Act today to safeguard your digital assets!

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Template 2: Network Security Timeline Presentation

Introducing our Network Security Timeline PowerPoint Dashboard—a game-changer for effectively addressing threats in your organization. This meticulously designed dashboard offers a concise and visually captivating overview of the tasks implementation. Our presentation templates have user-friendly designs and are easy to edit. You can save an ample amount of time by using our network security ppt. Also, our experts researchers and writers have created the content, you can easily edit and add the content as per your needs.

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Template 3: Six Months Network Cyber Security Development

Check out our Six Months Network Cyber Security Development Roadmap PowerPoint slide. This ppt explains all the network threats and how to strengthen network infrastructure. The network ppts are visually appealing and can grab anyone's attention. In addition, our slides are compatible with Google Slides. So, stop wasting time and utilize every resource and captivate your audience. Explore and download our network security PowerPoint templates now!

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Template 4: Dashboard For Threat Tracking 

Risk and threat monitoring is one of the most crucial tasks in any organization, as it is a common saying that a slip of a moment can result in an accident. Threat tracking dashboards are used to analyze threat status, and using this ppt, you can explain threat management to your stakeholders and team members. This ready-made threat tracking dashboard can help you create and implement threat protection plans. Explore our network security presentations and grab the ones that fit your requirements. Have a look at this ppt now!

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Template 5: Network Security 30 Days Plan

Did you know that 30-60-90-day plans help you achieve your desired goals? This plan allows you to strategize and prioritize your work accordingly. In the case of network security, you can make a 30-day plan to enhance your security network plan. Use our 30-day plan network security ppt to explain to your team members the essential network metrics, how they are measured, different types of attacks, and more. Take advantage of this opportunity and download this precious presentation. 

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Template 6: Seven Staged  Security Lifecycle

This PowerPoint presentation showcases the seven stages of the network security lifecycle. Use this network security ppt to showcase these seven stages diagrammatically. As you may have heard, pictures speak a thousand words. Use this ppt and demonstrate the seven stages of Planning, Policy Implementation, Monitoring and Management, Intrusion Detection, Security Assessment, Threat and Risk Analysis, and Security Policy Creation more straightforwardly. Our ready-made network security presentation template is the best tool you can use to deliver stunning presentations. Go and get this template today!

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Template 7: Network Security Process

Our meticulously crafted PowerPoint template gives you the precise backdrop to discover the world of network security. Whether you are an expert in the network security domain or starting, this template is the best way to begin. The presentation consists of three essential steps of the network security process. This template has everything from figuring out vulnerabilities to imposing robust security features. Furthermore, we understand the importance of customization, so our template is relatively easy to edit. So, don't wait; explore and download our "Step 1 2 3 Of Network Security Process'' PowerPoint template now!

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Template 8: Digital Network Security Assessment Flowchart

Are you facing network security issues like information leaks and want to strengthen your network security? Well, this is the right place. We have crafted a stunning and in-depth network security ppt to help you with this problem. Our research experts have created a "Digital Network Security Assessment Flowchart." This network security presentation template is easy to download and edit. Moreover, you can customize the slides according to your needs. Take advantage of the opportunity to make your presentation awesome. Download our digital network security assessment ppt today and demonstrate how to safeguard your network.

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Template 9: Digital Network Security Assessment

With the increased internet use, online transactions, information sharing, and storage have become common. It is essential to check network strength because a single vulnerability can cause significant devastation. Network attacks can put you in trouble making your world go upside down. Thus, it is crucial to have network policies in place because it helps in defining which network assets are weak and needs protection. Once an organization has some guidelines, it becomes hard to breach its network security. This network security presentation is all about setting network policies. If you are a network admin or need to want to set network policy standards in your organization, this presentation is the best tool. Use this ready-made network security presentation ppt, deliver your intent, and save valuable time. Download it now.

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Template 10: Network Security Training

Network security is crucial to protect yourself from cyber threats. Once a cyber threat penetrates, it destroys the complete network and essential information. Thus, knowing everything from basics to advance regarding network security is crucial. If you are working in an organization, educating your employees and all staff members about network security is crucial. Thus, considering that network security is essential, we crafted a network security training ppt to save you valuable time and effort. Our network training presentation template is easy to edit and download. You can explore and download it to save your precious time.

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Frequently Asked Questions

What is network security and its types.

In the context of computer networks and data, network security refers to the precautions taken to prevent unauthorized access, use, disclosure, interruption, modification, or destruction. It encompasses a variety of security methods, including physical security, wireless security, application security, data encryption, and access control.

Types of network security include:

Firewalls,  Intrusion Detection Systems (IDS), Intrusion Prevention Systems (IPS),  Data Loss Prevention (DLP) Systems, antivirus software.

What are the 7 layers of network security?

Physical layer : It has cables, routers, and switches

Data Link Layer: It smoothens data transfer between devices. 

Network Layer: This layer routes the data to different networks

Transport Layer: This layer is responsible for safe data transfer

Session layer: This layer manages the sessions between different devices

Presentation layer : Responsible for formatting data for users.

Application layer: Responsible for providing users web browsing service.

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Google Reviews

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Best Wireless Home Security Systems of 2024

Our top picks.

It used to be a pretty major headache to have a home security system installed . You’d have to shop around for a provider, purchase a one-size-fits-all equipment package, then bite your nails while you watch technicians rip up your drywall and rewire your house.

Thankfully, those days are over. There are tons of home security providers offering wireless options for homeowners that want total control over their security. That said, parsing out which providers are worthwhile and which are bunk can be a bit of a chore. That’s why we’ve compiled this list of our favorites:

What are Wireless Home Security Systems?

When buying a home security system, there are many different facets of the process to consider, one of which is whether to buy a wired or wireless system. So exactly how do you go about deciding which features and options are best for your particular situation? And how do you narrow down your choices to find “ the one ?”

Well, you have already taken the first step by coming to our review site where you will find in-depth reviews, pros and cons, and side-by-side comparisons. Which is the best way to narrow down your choices to a select few.

But now that you’ve narrowed down your choices to a select few, you might need a little more information before being able to choose just one.  That’s why we are providing you with more information that should help lead you to your final selection when it comes to buying a wireless home security system and the one that will best suit your needs.

How Wireless Home Security Systems Work

Years ago, all alarm systems required you to have a landline phone and that landline was used to connect your security system to the monitoring center and there weren’t any other options. However, today, many people don’t even have a landline phone because they use their mobile phones for everything. Therefore, a wireless security system is now the most obvious choice for many people, especially those who don’t have a landline and don’t want to rely solely on their internet connection.

Most security systems have three main components, which are a control panel, sensors, and a monitoring center. A wireless home security system uses a radio frequency to communicate. The radio frequency allows the alarm’s sensors throughout your home to communicate with the control panel. Then the wireless control panel communicates with the monitoring station through a cellular network, also known as cellular monitoring, thus eliminating the need for a landline.

The Different Types of Wireless Home Security Systems

There are several types of wireless home security systems.

Basic Systems

A basic system will generally only include the control panel, sensors, and an audible alarm. If you want any other features, you will either have to buy a more advanced package or add-on to your basic system, which, depending on the brand, could get expensive.

Mid-Range Systems

Then there are mid-range security systems that come with additional features such as offering mobile remote access with activity alert notifications. Once you have remote access via a mobile device, you are also better able to see what’s going on in and around your home. This is because you can tap the app to view the recordings from your security cameras.

Higher-End Systems

There are also higher-end systems that offer additional more sophisticated camera options such as streaming live video. And, many of them are compatible with other home automation equipment as well.

In addition, there are many wireless home security brands that will allow you to customize a system to suit your particular needs. For example, you might need a control panel with 10 sensors versus the four sensors that might come with other packages. Or, you might need different types of sensors such as those that monitor environmental disasters and other household dangers like fire and carbon monoxide, etc. Or perhaps you are a senior and would like to add a medical alert button and the related equipment to your security system.

The sky’s the limit with most home security systems these days. You just have to find a brand that has what you need or one that will let you customize a system to your exact specifications.

Are Wireless Security Systems Reliable?

Thanks to a host of tech advances, we’re now able to connect a wireless security system to almost any home internet network, making installing home security equipment much easier and more affordable than it used to be.

In home security, we’re seeing a shift away from bulky, hardwired systems that must be installed by a professional, and more toward SimpliSafe, Cove, and other fully DIY security kits that free us from heavy lifting and complex hardwiring.

But like all wireless technology, we’ve had questions from time to time on how reliable a setup like this would be compared to a fully integrated system, like Vivint or ADT. After all, we’re basically trusting ourselves to install it, and trusting the technology to perform when it counts.

Our first priority is ensuring the equipment can properly monitor our home and notify authorities in the event of a break-in. A wide majority of security systems do this very well, with little interruption or glitching; of course, we also recommend looking at your Wi-Fi speed before embarking on any home security setup. To get the peace of mind you really deserve, you might need to upgrade your Internet to a faster, more reliable plan.

FYI: More and more wireless security systems now use an ultra-reliable 4G LTE cellular signal to stay connected, so you can pretty much bypass Wi-Fi altogether (unless you have wireless cameras, which do run on Wi-Fi).

Overall, we’ve found wireless systems to be more customizable and cheaper than hardwired systems. And you won’t have to sacrifice reliability, either. In other words, yes, wireless security systems are extremely reliable these days.

How to Choose a Wireless Home Security System

Wireless security systems are a great way to go, particularly because they are so flexible compared to a hard-wired system. However, there are a few things you need to know before you run out and buy one.

DIY or Professional Installation

Before you buy a security system, you will need to think about the installation. Do you have the skills necessary to install the system yourself and do you have any physical restrictions that would keep you from climbing a ladder, etc. to do a wireless installation?

Most wireless home security installations are pretty easy to install and come with technical support and/or installation videos and instructions to guide you through the process. However, if there is any other reason you might not be able to do the installation yourself, then you should consider contacting a professional for assistance or looking for a wireless home security system that comes with professional installation already included with the package.

Home Automation

Do you have an existing home automation system ? If so, you will need to find a wireless home security system that is compatible with your existing equipment. Some brands sell proprietary home automation/security equipment and others are designed to work with a variety of third-party brands. If you buy a wireless home security system that’s not compatible with your existing home automation equipment, you will be required to use two different control systems, one for your home automation equipment and another for your wireless home security system. So if simplicity is important to you, look for a brand the is compatible with your existing equipment.

Brand Reputation

When buying a wireless home security system, you want to do enough research to find a brand that has a good industry reputation and offers top-quality equipment. This will help ensure their equipment will hold up and that their customer service and technical support team will be there for you if you need them. And that they will stand behind their products if you do happen to encounter a problem.

Another advantage of going with a brand that has a long-standing reputation in the industry is because they are more likely to be around in the future and not some fly-by-night operation. This means they will probably be around for years to come should you encounter a problem or have a warranty repair.

Comparative Costs

If you don’t take the time to read reviews and look at some of the best wireless home security systems side-by-side comparisons, and their pros and cons, you could miss the opportunity to get the most for your money. So always do your homework. Then once you’ve narrowed down some possibilities, take the time to compare them so you can see which brand has the best packages or one that has customization options. This will ensure you are getting the best possible equipment package for your particular situation and budget.

Self-Monitoring or Professional Monitoring

Another thing you will have to think about is whether you want to self-monitor or pay for professional monitoring. Self-monitoring is fairly easy because many wireless home security systems come with a mobile app that enables you to access, monitor, and control your system using that app. However, the monitoring burden is entirely up to you. With professional monitoring, you will have a trained representative on standby 24/7 monitoring your home and can respond immediately if suspicious activity is detected. And, going with a monitored alarm could get you a larger discount on your homeowner’s insurance. Additionally, the self-monitoring option is usually free of charge, whereas professional monitoring generally comes with an associated monthly fee. So it’s really a personal choice as to which route you want to go.

Doorbell Cameras

If you are thinking about getting a wireless home security system, it’s a good idea to get one with that offers a doorbell camera, even if you have to pay extra for it. A doorbell camera is your first line of defense when it comes to protecting your home and family. A doorbell camera can record what goes on around your door whether you’re home or not. And most are equipped with activity alerts and a two-way talk feature so you can remotely communicate with whoever is at your door without having to open it.

The Pros and Cons of a Wireless Home Security System

The best way to narrow down which wireless home security system is right for you is to look at the pros and cons of each. Here are a few items to consider while you’re deciding which type of system is right for you:

Wireless System Pros and Cons

Three big advantages of wireless security systems for renters are their impermanence, portability and expandability. Renters , unlike homeowners, generally avoid making permanent changes to their homes. Hardwired security systems therefore aren’t practical; they involve drilling into walls and installing permanent electrical circuits. In contrast, wireless security uses equipment that’s either freestanding or affixed to walls and entryways with removable adhesive. Wireless control panels, sensors and other components can easily be set up at different properties later on, and wireless systems are easily expanded with new components too. Wireless security plans also allow remote control of the system and general home automation. If home automation is your main appeal, check out our list of top systems with home automation features.

When homeowners choose between wireless and hardwired home security, wireless is generally their top option. Several reasons are that wireless security is no longer expensive, it keeps walls clean, it’s low-maintenance, and it can easily be reconfigured if needs should change. For example, you can easily add a video camera to a newborn’s room or rearrange motion sensors after home renovations. Another benefit is optional wireless environmental protection, which includes detectors for smoke, heat, carbon monoxide and/or moisture. Choosing wireless security also makes it easy to automate your home. Examples of home automation are controlling your lights, thermostat and door locks from your mobile phone.

Benefits of Wireless Home Security Systems

Wireless home security systems give you options. You can automate your home, or not. You can install the system yourself or turn to a professional. You can go with a company’s basic package, piecemeal a system together, or start with one item and expand as you need. You can also hide wireless equipment in plain sight without worrying about wires.

Home automation is convenient and easy, and wireless systems help you automate your home that much easier. Smart locks, programmable thermostats, cameras, and other automated home devices are by their very nature wireless, and most home security companies offer a home automation package with an app to remotely control everything on the system. That isn’t to say that you can’t have wired home automation, because you can, but automated equipment that is hardwired into your system is slower and harder to encrypt. It isn’t very smart. Wireless devices communicate more securely and faster to other devices on the system and to the monitoring center (if you choose monitoring).

You can easily expand many wireless systems to include home automation by incorporating smart devices one-by-one or all at once. Devices in security systems communicate to one another using a specific protocol. Protocols include Wi-Fi, Bluetooth, Z-Wave, and others. Make sure that the automation devices you want and the system you have speak the same protocol before upgrading your home security. If you think you might want to switch to home automation in the future, check that the security company and equipment you buy allow for an easy transition. Easy, secured home automation is a huge benefit of wireless security.


Wireless systems allow for a drill-free installation. There are no wires to hide and typically no tools needed to get started. Out of our top choices of wireless home security companies, three offer DIY installation. Professional installation does offer hands-on help from a trained technician, but most wireless systems are intuitive enough that no special guidance is needed. For the most part, wireless systems are plug-and-play, so the most you will need is to consult a troubleshooting guide or call customer service with questions. The wire-free, tool-free installation for wireless systems makes it the top choice for renters, because it creates no unsightly holes and you can easily re-install the system at your next home.


Wireless home security is flexible. If you don’t like where a sensor or camera is placed, move it. There are no wires stopping you. If you want more or less devices on your system, add them or take them away easily. You can install the system yourself or hire a professional. The choice is yours. Wired systems require professional installation, and you can’t easily add equipment or move it around. You’re tethered by wires. Wireless systems offer a freedom that wired systems cannot.

For the most part, wireless security equipment is only as visible as you want it to be. Window sensors are easily hid behind blinds or curtains, and door sensors are so small that they tend to blend into the doorframe. You can hide a wireless camera much easier than you can one with wires. If you want home security that blends into your decor and doesn’t draw attention to itself, then wireless is the better choice.

Wireless Security System Equipment

When we say that wireless home security offers you options, we mean it. The equipment you choose makes your system what it is, so we’ve outlined some of your options to help you decide what type of equipment you need or want for your home system. To start, it helps to write down what you need secured. For example, in an apartment you may need one door sensor and one window sensor. In a large house, you may need two door sensors, eight window sensors, a garage door sensor, cameras, motion detectors, and more. If you know what you need going in, then you won’t pay extra for features and equipment that you won’t use.

Security companies offer all types of equipment. We’ve consolidated the most popular wireless equipment you’re likely to come across when shopping for systems.

Wireless Security Cameras

Security cameras are a staple for any security system. They allow you to record video and keep an eye on your home when you’re away. Many security packages or stand-alone cameras allow you to control and access your home cameras no matter where you are. Check whether remote viewing and access is available on the plan you want. Some security companies provide their app for free, but others only provide the app with higher-priced security packages.

Wireless Indoor Cameras

Most wireless security cameras on the market are for indoor use. At first glance, indoor security cameras may seem all alike, but they vary in key areas, such as when they film, video quality, video storage, and size. Cameras can film continuously, only when triggered by a build-in or connected motion detector, when you schedule, or when you remotely access the camera. They may or may not include a built-in motion sensor. Cameras vary in the resolution quality of their film, in their field of view, and in key features (built-in microphone, light, night vision, etc.). Security cameras typically offer two options for storing videos, either on a local SD card or on the cloud. Sometimes cameras offer both. For cameras that use the cloud, you may have to purchase a subscription to the cloud storage service, or the cloud may only come with monitoring. In rare cases, companies will offer stand-alone cameras like SimpliSafe’s SimpliCam that offer free video streaming that you can access from your phone or computer. Indoor cameras range in size from practically invisible to a 6-inch-tall device that sits on a flat surface.

Wireless Outdoor Cameras

Outdoor cameras are exposed to the elements, so check that the camera you want to use outdoors is certified for that purpose. Outdoor cameras should be weather proof, vandal proof, and come equipped with night vision. Other features might include a built-in motion detector. It’s important to buy equipment that can stand up to your local weather conditions, be that extreme heat, cold, or moisture. Cameras are also exposed to anyone who approaches your home, so you should consider how your video feed is protected from vandals smashing the camera. Vandal-proof cameras protect the camera lens from damage with a polycarbonate dome cover or metal housing. Just like indoor cameras, consider how videos are stored, when the camera will film, and the quality of the video. You will get the best outdoor protection from cameras with a wide field of vision, high resolution video, and continuous video feed that is uploaded to the cloud.

Wireless Doorbell Cameras

A wireless doorbell camera can work as a stand-alone device or in tandem with the rest of your security system. When someone rings the doorbell, it activates the doorbell camera. That video can go to your smartphone, computer, or to a screen inside your home. Doorbell cameras are part of many home automated systems and provide an extra layer of protection. These cameras often come with two-way talk, night vision, and a built-in motion sensor. As with any security camera, check out the video resolution and field of view. When wireless doorbell cameras activate, the person outside your home will have no idea whether you are on the other side of the door or on the other side of the world.

Wireless Motion Detectors

Motion detectors are often stationed at entry walls and in large rooms, and they are easy to set up. When they detect movement, the alarm is triggered and other security devices (such as a camera) may be activated. Motion detectors are one of the most important pieces of equipment for your home security, because they let you know when someone is potentially in your home. Motion sensors work when you are away from home or when you activate them. Follow all directions when placing motion detectors for the most effective and seamless security.

Wireless Door & Window Sensors

Door and window sensors are contact motion sensors that trigger an alarm when the protected door or window opens. Like stand-alone motion detectors, these can activate when you’re away from home or whenever you choose. For example, you may keep the window sensors always activated but deactivate the door sensors when you’re at home. These sensors can function as part of your security system or on their own, and they vary in size and design from tiny, sleek sensors to bulky and obvious. Sensors also vary in sensitivity. Some may trigger when the door or window vibrates versus actually opening.

Wireless Smoke & Fire Alarms

Smoke and fire alarms alert you if they detect a high-level of smoke or if the temperature rises too rapidly, either of which may indicate a fire. Most homes already have wireless smoke or fire alarms, but you can connect the alarm to your security system to add another layer of protection that could save your life or property. If the alarm triggers when you’re away from home or out of earshot, then any alarms connected to your system will tell you and the security company monitoring your home. The monitoring company can alert you of the trigger and dispatch the fire department.

Wireless Carbon Monoxide Detectors

A carbon monoxide detector triggers when the level of carbon monoxide in your home reaches a dangerous level. Unlike other environmental dangers, you cannot see, taste, or smell carbon monoxide. These detectors can save your life and those of your pets. Carbon monoxide is released when you burn gasoline, wood, oil, charcoal, propane, and natural gas, so homes with gas appliances, chimneys, wood-burning stoves, and connected garages have a higher need for carbon monoxide detectors. Like smoke and fire alarms, these sensors can work as stand-alone alarms or connect with your security system. It’s always a great idea to connect detectors to your system so that a monitoring center can notify you and emergency dispatch in case the alarm is triggered.

Wireless Flood Lights

Flood lights are often used in conjunction with motion detectors. When sensors detect movement, the lights illuminate the surrounding area, which will allow you to see who is on your property and will potentially scare off intruders. Better outdoor lighting also means a clearer video for any outside cameras you have. When choosing flood lights, consider the brightness and distance the light shines. Flood lights can deter vandals or scare them away, but as a single piece of equipment, they are more for your peace of mind than for home protection.

Wireless Keypads

You use a keypad to manually arm and disarm your home security system. Like most wireless security equipment, keypads can be installed anywhere you want. Most wireless keypads are placed by the front door, but it doesn’t have to be. You may want multiple keypads if your home has multiple entrances that are often used, such as one by the front door and one in the garage, or if your home is multiple stories. The keypad allows you to enter your security code in case the alarm is triggered while you are at home. Choose an accessible placement that works for you.

The Most Frequently Asked Questions About a Wireless Home Security System

Another way to determine which home security system is right for you is to review the most frequently asked questions. This will bring to your attention issues and situations you might not have otherwise thought of. Below are some of the most frequently asked questions about buying a wireless home security system.

A wireless home security system uses a radio frequency to communicate with the control panel and sensors. The control panel then communicates with a monitoring center using a cellular signal. And, if you have a video camera, the video recordings are sent to a receiver that’s connected to your local or cloud storage.

If you’re a renter, please talk to your landlord before installing a security system because there might be some privacy issues to consider. Also, be sure you get everything in writing, including permission, as well as exactly what you can and can’t do (DIY vs professional installation, etc.) and exactly where you can and can’t install your system. You should also confirm whether or not you will have to leave your security system in place when you move.

Generally, you will receive  up to  a 20% discount on your homeowner’s insurance for installing an alarm system regardless of whether it’s a wired system or not.  And it usually doesn’t matter whether you installed it yourself or had a professional install it for you. However, the monthly discount probably won’t be as much if you don’t have your system professionally monitored.

Some wireless home security systems offer a video recording storage option and others don’t. For the ones that don’t, you are able to see a live video feed of your home any time you access your system; however, nothing is recorded. The systems with video storage generally include either a local storage or cloud storage option. A local storage option saves a pre-determined number of video clips on the device itself. This option is usually cost-free. A cloud storage option saves your video clips in the cloud. However, this is usually a paid service and the number of hours it will store will depend on how much cloud storage you are willing to pay for.

Today’s wireless home security systems are more stable than they used to be. However, they are still subject to interference and they are still vulnerable to being hacked even if the signal is encrypted.

Some alarm systems are equipped with infrared sensors that can detect and ignore pets under 40 pounds or so. Having a pet-friendly alarm system will help prevent false alarms. So if you have a pet (especially a large pet) you should look for a pet-friendly alarm system that uses body mass, temperature, movement, and speed to determine a potential threat.

Almost all wireless home security systems use a cellular connection; therefore, if your internet goes down or your power goes out, your security system will still work. However, there are still some wireless home security systems that use an internet connection as their main communication source. Most internet connected security systems come with a battery backup, which means if the power goes out your alarm will still work for a limited amount of time. But, if your internet goes down, unfortunately, you will be without an alarm system until it comes back up.

Features of Wireless Home Security Systems

Wireless security systems offer the same security benefits as hardwired systems — plus environmental protection, home automation, medical assist and more.

Here are essential features and some popular extras to consider.

This article may contain affiliate links that Microsoft and/or the publisher may receive a commission from if you buy a product or service through those links.

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presentation on wireless network security

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presentation on wireless network security

wireless network security

Wireless Network Security

Jul 17, 2014

570 likes | 746 Views

Wireless Network Security. TJX Data Breach. TJX used WEP security They lost 45 million customer records They settled the lawsuits for $40.9 million. Objectives. Describe the basic IEEE 802.11 wireless security protections

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  • personal security models
  • tkip addresses
  • mac address filtering weaknesses
  • wpa2 enterprise security
  • wireless authentication


Presentation Transcript

TJX Data Breach • TJX used WEP security • They lost 45 million customer records • They settled the lawsuits for $40.9 million

Objectives • Describe the basic IEEE 802.11 wireless security protections • Define the vulnerabilities of open system authentication, WEP, and device authentication • Describe the WPA and WPA2 personal security models • Explain how enterprises can implement wireless security

IEEE 802.11 Wireless Security Protections

IEEE • Institute of Electrical and Electronics Engineers (IEEE) • In the early 1980s, the IEEE began work on developing computer network architecture standards • This work was called Project 802 • In 1990, the IEEE formed a committee to develop a standard for WLANs (Wireless Local Area Networks) • At that time WLANs operated at a speed of 1 to 2 million bits per second (Mbps)

IEEE 802.11 WLAN Standard • In 1997, the IEEE approved the IEEE 802.11 WLAN standard • Revisions • IEEE 802.11 • IEEE 802.11a • IEEE 802.11b • IEEE 802.11g • IEEE 802.11n

Controlling Access to a WLAN • Access is controlled by limiting a device’s access to the access point (AP) • Only devices that are authorized can connect to the AP • One way: Media Access Control (MAC) address filtering • CSE uses this technique (unfortunately)

Controlling Access

MAC Address Filtering

Wired Equivalent Privacy (WEP) • Designed to ensure that only authorized parties can view transmitted wireless information • Uses encryption to protect traffic • WEP was designed to be: • Efficient and reasonably strong

WEP Keys • WEP secret keys can be 64 or 128 bits long • The AP and devices can hold up to four shared secret keys • One of which must be designated as the default key

WEP Encryption Process

Transmitting with WEP

Device Authentication • Before a computer can connect to a WLAN, it must be authenticated • Types of authentication in 802.11 • Open system authentication • Lets everyone in • Shared key authentication • Only lets computers in if they know the shared key

Vulnerabilities ofIEEE 802.11 Security

Open System Authentication • To connect, a computer needs the SSID (network name) • Routers normally send out beacon frames announcing the SSID • Passive scanning • A wireless device listens for a beacon frame

Turning Off Beaconing • For "security" some people turn off beacons • This annoys your legitimate users, who must now type in the SSID to connect • It doesn't stop intruders, because the SSID is sent out in management frames anyway • It can also affect roaming • Windows XP prefers networks that broadcast

MAC Address Filtering Weaknesses • MAC addresses are transmitted in the clear • An attacker can just sniff for MACs • Managing a large number of MAC addresses is difficult • MAC address filtering does not provide a means to temporarily allow a guest user to access the network • Other than manually entering the user’s MAC address into the access point

WEP • To encrypt packets WEP can use only a 64-bit or 128-bit number • Which is made up of a 24-bit initialization vector (IV) and a 40-bit or 104-bit default key • The 24-bit IV is too short, and repeats before long • In addition, packets can be replayed to force the access point to pump out IVs

Cracking WEP • With the right equipment, WEP can be cracked in just a few minutes • You need a special wireless card

Personal Wireless Security

WPA Personal Security • Wireless Ethernet Compatibility Alliance (WECA) • A consortium of wireless equipment manufacturers and software providers • WECA goals: • To encourage wireless manufacturers to use the IEEE 802.11 technologies • To promote and market these technologies • To test and certify that wireless products adhere to the IEEE 802.11 standards to ensure product interoperability

WPA Personal Security • In 2002, the WECA organization changed its name to Wi-Fi (Wireless Fidelity) Alliance • In October 2003 the Wi-Fi Alliance introduced Wi-Fi Protected Access (WPA) • WPA had the design goal to protect both present and future wireless devices, addresses both wireless authentication and encryption • PSK addresses authentication and TKIP addresses encryption

WPA Personal Security • Preshared key (PSK) authentication • Uses a passphrase to generate the encryption key • Key must be entered into both the access point and all wireless devices • Prior to the devices communicating with the AP • The PSK is not used for encryption • Instead, it serves as the starting point (seed) for mathematically generating the encryption keys

Temporal Key Integrity Protocol (TKIP) • WPA replaces WEP with TKIP • TKIP advantages: • TKIP uses a longer 128-bit key • TKIP uses a new key for each packet

Message Integrity Check (MIC) • WPA also replaces the (CRC) function in WEP with the Message Integrity Check (MIC) • Designed to prevent an attacker from capturing, altering, and resending data packets

WPA2 Personal Security • Wi-Fi Protected Access 2 (WPA2) • Introduced by the Wi-Fi Alliance in September 2004 • The second generation of WPA security • Still uses PSK (Pre-Shared Key) authentication • But instead of TKIP encryption it uses a stronger data encryption method called AES-CCMP

WPA2 Personal Security • PSK Authentication • Intended for personal and small office home office users who do not have advanced server capabilities • PSK keys are automatically changed and authenticated between devices after a specified period of time known as the rekey interval

PSK Key Management Weaknesses • People may send the key by e-mail or another insecure method • Changing the PSK key is difficult • Must type new key on every wireless device and on all access points • In order to allow a guest user to have access to a PSK WLAN, the key must be given to that guest

Pre-Shared Key Weakness • A PSK is a 64-bit hexadecimal number • Usually generated from a passphrase • Consisting of letters, digits, punctuation, etc. that is between 8 and 63 characters in length • If the passphrase is a common word, it can be found with a dictionary attack

Cracking WPA

WPA2 Personal Security • AES-CCMP Encryption • Encryption under the WPA2 personal security model is accomplished by AES-CCMP • This encryption is so complex that it requires special hardware to be added to the access points to perform it

WPA and WPA2 Compared

Enterprise Wireless Security

IEEE 802.11i • Improves encryption and authentication • Encryption • Replaces WEP’s original PRNG RC4 algorithm • With a stronger cipher that performs three steps on every block (128 bits) of plaintext

802.1x Authentication

IEEE 802.11i • Key-caching • Remembers a client, so if a user roams away from a wireless access point and later returns, she does not need to re-enter her credentials • Pre-authentication • Allows a device to become authenticated to an AP before moving into range of the AP • Authentication packet is sent ahead

WPA Enterprise Security • Designed for medium to large-size organizations • Improved authentication and encryption • The authentication used is IEEE 802.1x and the encryption is TKIP

WPA Enterprise Security • IEEE 802.1x Authentication • Provides an authentication framework for all IEEE 802-based LANs • Does not perform any encryption • TKIP Encryption • An improvement on WEP encryption • Designed to fit into the existing WEP procedure

WPA2 Enterprise Security • The most secure method • Authentication uses IEEE 802.1x • Encryption is AES-CCMP

Enterprise &Personal Wireless Security Models

Enterprise Wireless Security Devices • Thin Access Point • An access point without the authentication and encryption functions • These features reside on the wireless switch • Advantages • The APs can be managed from one central location • All authentication is performed in the wireless switch

Enterprise Wireless Security Devices

Enterprise Wireless Security Devices • Wireless VLANs • Can segment traffic and increase security • The flexibility of a wireless VLAN depends on which device separates the packets and directs them to different networks

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  17. 8 Best Wireless Network Security-Themed Templates

    Below you'll see thumbnail sized previews of the title slides of a few of our 8 best wireless network security templates for PowerPoint and Google Slides. The text you'll see in in those slides is just example text. The wireless network security-related image or video you'll see in the background of each title slide is designed to help ...

  18. Support

    Check the current status of services and components for Cisco's cloud-based Webex, Security and IoT offerings. Cisco Support Assistant. The Cisco Support Assistant (formerly TAC Connect Bot) provides a self-service experience for common case inquiries and basic transactions without waiting in a queue.

  19. What you need to know about 5G home internet

    Satellite internet providers like Starlink made an impact on rural areas. And wireless service carriers such as Verizon, ATT, and T-Mobile introduced fixed wireless internet, also known as 5G/4G home internet, mainly in the cities. While wireless home internet is not a new concept, it was initially limited to select cities.

  20. Best Wireless Home Security Systems of 2024

    Exceptionally designed and loaded with features, it's easy to build out a completely wireless security network with SimpliSafe. Vivint offers home security systems that make it easy to never ...

  21. PPT

    Presentation Transcript. Wireless Network Security • Wireless networks are "just like" other networks • Except . . . • Almost always broadcast • Generally short range • Usually supporting mobility • Often very open. Types of Wireless Networks • 802.11 networks • Variants on local area network technologies • Bluetooth ...

  22. Wireless network security

    traffic passes through multiple wireless access points. Encryption increases privacy, but can be thwarted, either by software, or by gaining access to a PC configured with wireless and writing down the key. Wireless does not add any additional threat in the way of viruses. Security measures such as firewalls, can reduce the risk.

  23. Contact Cisco

    Get in touch. Please reach out to sales for general inquiries or to chat with a live agent. Sales inquiries. 1 800 553 6387, press 1. Order and billing. 1 800 553 6387 , press 2-1. Monday to Friday

  24. PPT

    Presentation Transcript. Organizations data protection • 38% scans company network for unauthorized access points • 22% instruct employees about wireless network problems • 57% set up network policy • 33% without protection !!!!! Corporal networks • WLAN protection on commercial and organizations level • System interdependence ...

  25. Connected Workplace Business Internet

    Connected Workplace is a fully managed, nationwide fixed wireless Business Internet solution with our leading 5G network at its core. As a managed service with end-to-end support, your team can focus on what's most important for your business—rather than cumbersome, day-to-day connectivity management activities.

  26. PPT

    Wireless Network Security. TJX Data Breach. TJX used WEP security They lost 45 million customer records They settled the lawsuits for $40.9 million. Objectives. Describe the basic IEEE 802.11 wireless security protections Slideshow 1879603 by saxton ... An Image/Link below is provided (as is) to download presentation Download Policy: ...