The Internet is a giant computer network which connects computers all over the world. Now the Internet is widely used in all spheres of the life and activity, it is first of all a way to exchange information, without which today is difficult to imagine the life. The Internet is integral part of human society and business. But the serious question for network engineers, designers, lawmakers and enforcers is the need for protect the Internet networks from the Internet crimes, hacking and attacks.
There are many kinds of dangers and ways of attacks, but there are also quite a number of hardware, software and physical methods of protection against them. Such devices as routers, IDS and Firewalls are examples of hardware devices used for network security. Anti-virus software and VPNs are some of the software network security tools.
One of the most effective and easily implemented ways to protect the networks is the use of Firewalls. The Firewall is a first line of defense against the external threats to networks, it can be either software based or hardware based. The main task of firewall is to allow the authorized access to a computer while blocking unauthorized access. The Network layer firewalls makes decisions based on the source address, destination address and ports in individual IP packets. Modern network layer firewalls maintain internal information about states of the connections passing through them.
Depending of the service kind and security you need for your network, you can choose the type of firewall. The most useful types of firewalls are: Screened host firewall, Screened subnet firewall, Packet filer firewall, Stateful inspection firewall, Hybrid firewall, Proxy server firewall, Application level (gateway) firewall.
ConceptDraw DIAGRAM is a powerful diagramming and vector drawing software that allows quick and easy draw the diagrams of your safe networks.
Example 1. Network Security
Computer and Networks Area provides the Network Security Diagrams solution that contains the libraries with a great number of predesigned vector stencils, a set of professional looking examples that you can change for your needs.
All numerous predesigned Network Security Diagram samples are available from ConceptDraw STORE. Use of ready sample is the most simply and quick way of drawing diagrams, you can start with ready sample and change it according to your taste and needs.
Example 2. 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. They show protection networks with Firewalls and other network security devices. An experienced user spent 5-10 minutes creating each of these samples.
Use the Network Security Diagrams Solution for ConceptDraw DIAGRAM to create your own 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:
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
The ConceptDraw Flowchart component includes a set of samples and templates. This geathered as flowchart maker toolbox which focused on drawing flowcharts of any industry standards.
Picture: Flowchart Components
Every corporate network is unique, though there are guidelines and best practices in developing networks. As it is quite difficult to implement a pure topology within a company, using a hybrid network topology is considered a better solution. As a rule, such network assembles advantages and features of source topologies.
This diagram is an example of the Hybrid network. This type of network topology means a conjunction of other network topologies. Such as star-bus, ring-mesh topologies, etc. It should be obviously diverse networks. The final computer network inherits both advantages and disadvantages of its ingredients. Using the ConceptDraw Computer and Networks solution including vector graphic libraries and templates one can develop professional custom network diagrams of any topology and complexity.
Picture: Hybrid Network Topology
This action mindmap helps to close messaging to the community from an unhappy customer, transfer communication to a private channel, and resolve customer issues.
Picture: Bank Customer Notifications
A Telecommunications network is a network of nodes, links, trunks and telephone switches that are connected, operated by telephone companies and realize telephone, audio, visual and data communications among the users. The telecommunications network can also include Internet, microwave, wireless equipment.
This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park and shows the Telecommunications network.
Picture: Telecommunication networks. Computer and Network Examples
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
Recruitment refers to the overall process of attracting, selecting and appointing suitable candidates for jobs within an organization.
The recruitment process often requires design and use of various HR flowcharts, diagrams, attractive illustrations. Never before their creation wasn’t so easy as now with HR Flowcharts Solution from the Management Area of ConceptDraw Solution Park.
If you need to describe some process, diagramming is a perfect tool for almost any imaginable purpose. The set of the most commonly used flow charts symbols is quite wide and includes symbols for operations, processes, data inputs and outputs. You can see the full list of all the symbols used for flowcharting in Flowcharts solution from Diagrams area in ConceptDraw Solution Park.
A flow chart is often used for visual representation of a sequential process flow. The flowchart approach to any process is to divide it into some sequential actions. What makes a flow chart so popular and clear to make out is the set of standard flowchart symbols that has the same reading independently from processes described with their applying. The current drawing represents the vector library containing the pack of standard flowchart symbols. This library is supplied with ConceptDraw Flowcharts solution.
Picture: Flow Chart Symbols
It's no secret that there is a list of skills that every average system administrator should have. And it's important to be able to manage domains via active directory technologies. The best way to keep all the details in mind is to draw a diagram representing users, groups and domains.
This diagram represents an Active Directory Services (Active Directory Domain Services). It can be helpful for system and network administrators to organize a network physical and logical elements (domains, data bases, servers, network equipment, end-user computers etc.) into a secure and logical structure. The logical structure of Active Directory is a hierarchical organization of all network components. The data that is stored in Active Directory comes from some diverse sources. The Active Directory diagram created using ConceptDraw Active Directory Diagram solution. It shows allocating group policies and functions assigned to end users. It helps to plan, manage and maintain the certain user access scenario.
Picture: Active Directory Diagram