DNF Security Official Blog

Overview of IP video surveillance and Network video Recorders (NVRs)

IP video surveillance are full-fledged computers that process video. The difference between IP cameras and analog cameras is how they transmit the video and how much intelligence each one has. There is a whole bunch of stuff that you can do with IP video cameras that you simply cannot do with analog cameras.

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What is Metadata?

What is Metadata? 10 MARCH, 2017 Sometimes in the IT world we have names for features and capabilities that seem to be tailored for a business user’s confusion. One such word is Metadata. However the concept of metadata is actually quite simple. You might have heard...

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IP Camera Made Simple

IP Camera Made Simple 20 FEBRUARY, 2017 In today’s digitally connected world our computers and mobile devices can communicate anywhere there is a network. IP cameras that connect to this network allow us to view video from virtually anywhere in the world. How...

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CPU Made Simple

CPU Made Simple 13 FEBRUARY, 2017 What is the CPU (Central Processing Unit)? The CPU short for “Central Processing Unit” is like the brain of the computer. Once you understand how it works you will understand the computer as well. There are lots of different wires...

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IPv4 vs. IPv6 Made Simple

IPv4 vs. IPv6 Made Simple 13 FEBRUARY, 2017 An IP address is a numeric address. It is an identifier for a computer or device on a network. Every device has to have an IP address for communication purposes. The IP address consists of two parts. The first part is the...

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How to Build a Software Defined System

How to Build a Software Defined System 10 FEBRUARY, 2017 Another approach to virtualization is to modify the source code of the guest operating system. If we can do that, not only can we avoid problematic instructions but we can also include optimizations. For...

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Barcodes Made Simple

Barcodes Made Simple 9 FEBRUARY, 2017 Barcodes are found in virtually all products that you see in any store. When a laser from a computer scans a barcode, it is actually scanning through a series of 95 evenly spaced columns and checking to see if each one of those...

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32 Bit and 64 Bit Made Simple

32 Bit and 64 Bit Made Simple 8 FEBRUARY, 2017 Computer hardware and software can come in 32 or 64 bit versions, the difference between a 32-bit and a 64-bit is the way that it handles memory. The bit size refers to the memory that it can address. A 32-bit system can...

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A Simple Illustration of Port Forwarding

A Simple Illustration of Port Forwarding 8 FEBRUARY, 2017 What a Port is & How it Works? We have a phone with an electronic switch board that would typically be used in a company. When someone wants to make a call to this company, and let’s say they wanted...

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Port Forwarding Made Simple

Port Forwarding Made Simple 8 FEBRUARY, 2017 Basically port forwarding allows computers over the internet to connect to a specific computer or service within a private network. It is making your computer accessible over the internet even though you are behind a...

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Cloud Security Tools for Remediation and Response

Cloud Security Tools for Remediation and Response 3 FEBUARY, 2017 We have two things that you can use in order for you to detect, assess, and remediate what you have in the cloud. So there are two components and sometimes it gets confusing. Sometimes people say, hey...

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TCP and UDP Made Simple

TCP and UDP Made Simple 2 FEBUARY, 2017 Whenever a computer wants to communicate with another computer the communication between those two computers needs to be good and reliable so we can guarantee that the data is received correctly. For example when you want to...

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