This site uses cookies. By continuing to browse the ConceptDraw site you are agreeing to our Use of Site Cookies.
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
Computer security diagram, monitor, firewall, elbow connector, without arrows, elbow connector, display, direct connector, without arrows,
The vector stencils library "Cisco routers" contains 27 symbols of routers for drawing Cisco computer network diagrams.
"When multiple routers are used in interconnected networks, the routers exchange information about destination addresses using a dynamic routing protocol. Each router builds up a table listing the preferred routes between any two systems on the interconnected networks. A router has interfaces for different physical types of network connections, (such as copper cables, fiber optic, or wireless transmission). It also contains firmware for different networking Communications protocol standards. Each network interface uses this specialized computer software to enable data packets to be forwarded from one protocol transmission system to another.
Routers may also be used to connect two or more logical groups of computer devices known as subnets, each with a different sub-network address. The subnets addresses recorded in the router do not necessarily map directly to the physical interface connections." [Router (computing). Wikipedia]
The symbols example "Cisco routers - 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
Router
Router, router,
Router, subdued
Router, subdued, router,
Router with silicon switch
Router with silicon switch, router with silicon switch,
Wavelength router
Wavelength router, wavelength router,
NetFlow router
NetFlow router, NetFlow router ,
uBR 910
uBR 910, uBR 910,
Broadband router
Broadband router, broadband router,
Gigabit switch ATM tag router
Gigabit switch ATM tag router, gigabit switch ATM tag router,
ATM tag switch router
ATM tag switch router, ATM tag switch router,
ATM router
ATM router, ATM router,
NetFlow router
NetFlow router, NetFlow router, edge label switch router, NetFlow,
Cisco 7505
Cisco 7505, Cisco 7505,
Cisco 7507
Cisco 7507, Cisco 7507,
Cisco 7500 ARS (7513)
Cisco 7500 ARS (7513), Cisco 7500 ARS, Cisco 7513 ,
Voice enabled router
Voice enabled router, voice enabled router,
TDM router
TDM router, TDM router ,
IP telephony router
IP telephony router, IP telephony router,
IAD router
IAD router, IAD router,
Content service router
Content service router, content service router,
Cisco storage router
Cisco storage router, Cisco storage router,
Router with firewall
Router with firewall, router with firewall ,
Wireless router
Wireless router, wireless router,
ASR 1000 series
ASR 1000 series, ASR 1000 series,
ATM 3800
ATM 3800, ATM 3800,
AXP
AXP, AXP,
Cable modem
Cable modem, cable modem,
Ground terminal
Ground terminal, ground terminal,
"... logical topology shows how data flows within a network, regardless of its physical design. ...
... mapping the data flow between the components determines the logical topology of the network." [Network topology. Wikipedia]
"In a shared media topology, all the systems have the ability to access the physical layout whenever they need it. The main advantage in a shared media topology is that the systems have unrestricted access to the physical media. Of course, the main disadvantage to this topology is collisions. If two systems send information out on the wire at the same time, the packets collide and kill both packets. Ethernet is an example of a shared media topology. ...
The token-based topology works by using a token to provide access to the physical media. In a token-based network, there is a token that travels around the network. When a system needs to send out packets, it grabs the token off of the wire, attaches it to the packets that are sent, and sends it back out on the wire. As the token travels around the network, each system examines the token. When the packets arrive at the destination systems, those systems copy the information off of the wire and the token continues its journey until it gets back to the sender. When the sender receives the token back, it pulls the token off of the wire and sends out a new empty token to be used by the next machine." [Logical topology. Wikipedia]
This Cisco logical computer network diagram example 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.
Logical network diagram
Logical network diagram, router, network cloud, firewall,