Network Security Model
The network security involves all tools, devices, strategies and activities which enterprises and organizations undertake to protect their networks, data and operations. An effective network security strategy must include the most effective set of tools for identification and reflection various threats and attacks. Creation of well thought-out network security model will effectively help you in realization your network's security. The network security model (NSM) is a scheme that reflects the general plan and the policy of ensuring the network security, and usually includes all or some of the following seven layers in different modifications according to the specific company's needs:
- Physical layer — involves organization of physical security against the access to the data on computer devices, this can be access control devices, cameras, alarm.
- VLAN layer — involves creation of Virtual Local Area Networks (VLANs) which join together common hosts for security purposes.
- ACL layer — supposes creation and maintenance of Access Control Lists (ACLs) which allow or deny the access between hosts on different networks.
Software layer — helps to protect the user layer and ensures the software's actuality.
- User layer — involves the user’s training of security on the network.
- Administrative layer — supposes the training of administrative users.
- IT department layer — this layer is the most important for network security, it contains all network security professionals and support specialists, network technicians and architects, which organize and maintain the work of the network and hosts.
Pay please your attention for the powerful ConceptDraw DIAGRAM diagramming and vector drawing software extended with Network Security Diagrams Solution from the Computer and Networks Area of ConceptDraw Solution Park which lets fast and easy design all variety of network security models: Open network security model, Closed network security model, Restrictive network access model.
Example 1. Network Security Model
To design the Network Security Model, we recommend to use already ready-to-use 460 predesigned colorful vector objects offered by 4 libraries of the Network Security Diagrams Solution:
- Cybersecurity Clipart
- Cybersecurity Shapes
- Cybersecurity Connectors
- Cybersecurity Round Icons
Simply drag desired objects from the libraries to your document, arrange them, depict relationships between devices with help of connectors from the Cybersecurity Connectors library, type the text and make your diagram more attractive with help of bright colors applied for objects, connectors and background.
Example 2. Network Security Diagrams Solution in ConceptDraw STORE
One more useful way for inspiration and excellent start for drawing Network Security Diagrams and Network Security Model is collection of predesigned network security samples and examples offered by Network Security Diagrams Solution in ConceptDraw STORE.
Example 3. Network Security Diagram — Access Control and Encryption
The samples you see on this page were created in ConceptDraw DIAGRAM using the tools of Network Security Diagrams Solution for ConceptDraw DIAGRAM software. An experienced user spent 10 minutes creating each of these samples.
Use the Network Security Diagrams Solution for ConceptDraw DIAGRAM to create your own Network Security Model and Network Security Diagrams quick, easy and effective.
All source documents are vector graphic documents. They are available for reviewing, modifying, or converting to a variety of formats (PDF file, MS PowerPoint, MS Visio, and many other graphic formats) from the ConceptDraw STORE. The Network Security Diagrams Solution is available for all ConceptDraw DIAGRAM users.
TEN RELATED HOW TO's:
Nodes of any computer network are somehow organized in a hierarchy or a layout. Some of the common layouts like star network topology are more reliable and some like ring topology withstand high loads better. It is also important to distinguish logical topologies from physical.
This diagram represents a typical view of the star network topology. The star network topology is one of the most frequently used network topologies in the majority of office and home networks. It is very popular because of its low cost and the easy maintenance. The plus of the star network topology is that if one computer on the local network is downed, this means that only the failed computer can not send or receive data. The other part of the network works normally. The minus of using star network topology is that all computers are connected to a single point-switch, or hub. Thus, if this equipment goes down, the whole local network comes down.
Picture: Star Network Topology
Planning a computer network can be a challenge for a junior specialist. However, knowing how to draw a computer network diagrams isn’t a rocket science anymore. There are a lot of special software for creating such diagrams with predesigned templates and examples.
The core for Network Fault Tolerance System presented here, is the equipment of Cisco. You can see here the certified Cisco equipment icons. Generally, ConceptDraw DIAGRAM libraries contain more than half of a thousand objects representing the standardized images of Cisco equipment. ConceptDraw solution for network diagramming is a great network diagramming tool for any level skills - from students to network guru.
Picture: How to Draw a Computer Network Diagrams
When describing any computer network, we imagine a set of devices and nodes, arranged in some way. Talking about network structures, we should distinguish physical and logical network topologies, as physical topology is about devices location and logical topology illustrates data flow. In the same time, they do not have to match, and some devices, such as repeaters, may have a physical star layout, but a bus logical topology.
There are two main types of computer network topologies: Physical topology that show the physical organization of a network - equipment and types of connections. Star network topology involves a set of devices that is connected to a single hub (router). Ring network topology means that, devices connected according this topology have two connections, connecting with nearby devices to make a loop. Bus network topology is the topology presented at the current diagram. It is similar to a ring topology. The difference is that data moves up and down a linear connection, copying itself where network equipment works as bus-stations along the way. This network topology can be used for small network, or when adding an extra device into a network.
Picture: Network Topologies
When designing a network, it is important to take into account the hierarchy of network devices. When you have a root device you should consider a tree network topology that might have any number of lower levels as you might need. This technology is based on star and bus network topologies.
This is a schematic representation of a Tree computer network topology. A tree topology means that some star networks are linked together. A star network is a topology of the local network where a central workstation is connected with each end-user computer or peripherals. A tree structure means that, the central nodes of these star networks are linked to a main cable (the Bus topology). So, a Tree network topology is a few Star networks connected into a Bus topology. This scheme can be applied to draw the particular physical or logical network diagrams using the ConceptDraw Computer and Networks solution.
Picture: Tree Network Topology Diagram
Developing a software project supposes architecture first. To make it proper, you can use data flow diagram model in your current project.
The data flow diagram represents the Model of small traditional production enterprise that is made using Yourdon and Coad notation. It shows how the data is transfered through a process. According to the notation of Yourdon and Coad a process is represented by circles and data stores are drawn using parallel lines. This DFD was created using the ConceptDraw Data Flow Diagrams solution. Using this solution one can visualize data flow accordingly to the rules of two basic notations used for data flow modeling.
Picture: Data Flow Diagram Model
What is a computer network? This is a set of devices and systems that are connected to each other (logically or physically) and communicate with each other. This could include servers, computers, phones, routers, and so on. The size of this network can reach the size of the Internet, and can consist of only two devices connected by a cable.
This sample shows the connection scheme of the home WLAN equipment to the Internet.
Picture: Diagram of a Basic Computer Network. Computer Network Diagram Example
Use ConceptDraw DIAGRAM diagramming and vector drawing software enhanced with Computer and networks solution to draw different types of network diagrams: physical layout and topology, LAN and WAN, Cisco, Apple, Wi-Fi wireless and Ethernet wired networks, etc.
Special libraries of highly detailed, accurate shapes and computer graphics, servers, hubs, switches, printers, mainframes, face plates, routers etc.
Picture: Network Gateway Router
An Enterprise private network (EPN) is a computer network built by an enterprise to interconnect the sites of the company (such as head and remote offices, shops, production sites, etc.) on purpose to share the computer resources.
This example was created in ConceptDraw DIAGRAM using the Computer and Networks solution from the Computer and Networks area of ConceptDraw Solution Park. It shows the Enterprise Private Network (EPN) using the frame-relay and dial-up.
Picture: EPN Frame-Relay and Dial-up Network. Computer and Network Examples