Network Diagram with International StandardThe connectivity Between Internet, WAN, LAN, Intranet, Server and

Datacenter

• The Connectivity Between The Internet and The System.

Router

Firewall

DMZ Zone(All Server)

DMZ Zone(Data

center)

LAN 1 Switch

LAN 2 Switch

WAN Switch

LAN 1 connecting Switch

LAN 2 connecting Switch

User PC User PC

Internet/Cloud

VPN

Wi-Fi Router

The Definition and Declaration of the Connectivity

• Connecting with Internet/cloud and router.

The Internet is a global network connecting millions of computers. More than 100 countries are linked into exchanges of data, news and opinions.

A router is a device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs or a LAN and its ISP's network. Routers are located at gateways, the places where two or more networks connect.

A firewall is a set of related programs, located at a network gateway server, that protects the resources of a private network from users from other networks.

Internet/Cloud

Router

Firewall

The Connection between Internet, Router and Firewall.

• The Connection Between the Router and The Internet and Firewall in details.

Internet/Cloud Router Firewall

BTCL Bandwidth

Any other ISP Bandwidth

Link Load Balance

Wan Route

LAN Route or NAT

Bandwidth Manage

Spam, Web Filter and DDOS Attack

Intrusion Prevention System

LAN Protection

Wan Protection

The Connection Between Firewall and Server.

FirewallDemilitarized zone (DMZ)

Application Server

Database Server

Mail Server

AD,DNS, Anti Virus,IIS Server Data Center

DMZ: In computer networks, a DMZ (demilitarized zone) is a computer host or small network inserted as a "neutral zone" between a company's private network and the outside public network. It prevents outside users from getting direct access to a server that has company data.

The Connection Between The Firewall and VPN

Firewall

VPN

VPN: A Virtual Private Network (VPN) is a network technology that creates a secure network connection over a public network such as the Internet or a private network

The Connection Between The Firewall and Switch

Firewall

LAN 2 SwitchLAN 1 Switch

Switch: In networks, a device that filters and forwards packets between LAN segments. Switches operate at the data link layer (layer 2).

The Connection Between The LAN Switch and User

LAN 1 Switch LAN 2 Switch

Hub Switch Hub Switch

User PC

User PC

User PC

User PC

Wi-Fi Router

Wi-Fi Router

User PC

User PC

Hub: A common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN.

Wi-Fi Router: A wireless router is a device that performs the functions of a router but also includes the functions of a wireless access point.

Network Cable: Networking cables are used to connect one network device to other network devices

RJ-45 Connector: RJ45 is a standard type of connector for network cables such as those used in Ethernet networks.

Conclusion

• In This Presentation we describe about a standard international network diagram. Where we discussed briefly how the network work with internet/intranet, router, firewall, server, switch, hub and end user. If we flow this diagram, we hope that any computer network will run smoothly.• Thanks’ for your valuable time to see this presentation.

Mehedi Hassan System Administrator