Firewall between LAN and WAN

This computer security diagram example was designed on the base of the Wikimedia Commons file: Firewall.png.
[commons.wikimedia.org/ wiki/ File:Firewall.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted, secure internal network and another outside network, such as the Internet, that is assumed to not be secure or trusted. Firewalls are often categorized as either network firewalls or host-based firewalls. Network firewalls are a software appliance running on general purpose hardware or hardware-based firewall computer appliances that filter traffic between two or more networks. Host-based firewalls provide a layer of software on one host that controls network traffic in and out of that single machine. Firewall appliances may also offer other functionality to the internal network they protect such as acting as a DHCP or VPN server for that network." [Firewall (computing). Wikipedia]
The cybersecurity diagram example "Firewall between LAN and WAN" was created using the ConceprDraw PRO software extended with the Network Security Diagrams solution from the Computer and Neworks area of ConceptDraw Solution Park.

Computer security diagram

Used Solutions

AREA_COMPUTER_NETWORKS >

Network Security Diagrams

The Network Security Diagrams solution presents a large collection of predesigned cybersecurity vector stencils, cliparts, shapes, icons and connectors to help you succeed in designing professional and accurate Network Security Diagrams, Network Security Infographics to share knowledge about effective ways of networks protection with help of software and network security devices of different cyber security degrees, Network Plans for secure wireless network, Computer Security Diagrams to visually tell about amazing possibilities of IT security solutions. The samples and examples reflect the power of ConceptDraw DIAGRAM software in drawing Network Security Diagrams, give the representation about variety of existing types of attacks and threats, help to realize their seriousness and the methods to deal with them.

Cisco LAN - Vector stencils library

The vector stencils library "Cisco LAN" contains 23 symbols of local area network (LAN) devices and equipment for drawing Cisco LAN topology diagrams.
"Network topology describes the layout of interconnections between devices and network segments. At the Data Link Layer and Physical Layer, a wide variety of LAN topologies have been used, including ring, bus, mesh and star, but the most common LAN topology in use today is switched Ethernet. At the higher layers, the Internet Protocol (TCP/ IP) has become the standard, replacing NetBEUI, IPX/ SPX, AppleTalk and others.
Simple LANs generally consist of one or more switches. A switch can be connected to a router, cable modem, or ADSL modem for Internet access. Complex LANs are characterized by their use of redundant links with switches using the spanning tree protocol to prevent loops, their ability to manage differing traffic types via quality of service (QoS), and to segregate traffic with VLANs. A LAN can include a wide variety of network devices such as switches, firewalls, routers, load balancers, and sensors.
LANs can maintain connections with other LANs via leased lines, leased services, or the Internet using virtual private network technologies. Depending on how the connections are established and secured in a LAN, and the distance involved, a LAN may also be classified as a metropolitan area network (MAN) or a wide area network (WAN)." [Local area network. Wikipedia]
The symbols example "Cisco LAN - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ computer-networks-cisco

Sun workstation

Workstation

Macintosh

Terminal

Mini VAX

Printer

Laptop

File server

Monitor

Web cluster

ATM fast gigabit etherswitch

HP Mini

Supercomputer

LAN2LAN

LAN to LAN

Web server

Web browser

Repeater

PDA

General appliance

PC, blue

Mini VAX, blue

Used Solutions

Computer and Networks >

Cisco Network Diagrams

Network Gateway Router

Special libraries of highly detailed, accurate shapes and computer graphics, servers, hubs, switches, printers, mainframes, face plates, routers etc.

Computer and Networks Area

The solutions from Computer and Networks Area of ConceptDraw Solution Park collect samples, templates and vector stencils libraries for drawing computer and network diagrams, schemes and technical drawings.

Basic Network Diagram

The Basic Network Diagram is an easy and effective way to design and document a simple network, it lets to represent visually and logically how the different network devices and computer equipment can be installed to meet the main business needs. ConceptDraw DIAGRAM software supplied with Computer Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park is a perfect tool for drawing the Basic Computer Network diagrams, designs, schematics, and maps, network architectures, topologies, and layouts. Numerous vector libraries of network symbols, icons and components are incredibly helpful for IT and telecom engineers, stakeholders and end-users when designing Basic Network Diagrams, Common Network Diagrams, Common Network Topologies, 10Base-T Star Network Topologies, Bus Topology Diagrams, Communication Network Diagrams, System Designs, Regional Cable Head-End Diagrams, etc. Collection of predesigned samples and templates included to Computer Network Diagrams solution also greatly extends the capabilities of ConceptDraw DIAGRAM users.

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