Enterprise LAN cannot do without switch/router/firewall—Vecloud

The switch can enable intra-LAN communication, the router connects you to the Internet, and the firewall protects your network. Therefore, these three devices are indispensable in the network. These three devices are very important to the network and cannot be ignored.
Switch-bridge network equipment
In a local area network (LAN), a switch is similar to an overpass in a city. Its main function is to bridge other network equipment (routers, firewalls, and wireless access points) and connect client devices (computers, servers) , Network cameras and IP printers). In short, the switch can provide a central connection point for all the different devices on the network.
Router-access to the Internet
router is also called a gateway device, it is usually used to route data packets between different networks, it will also automatically select and set routing according to the channel conditions, and connect your network to the Internet . In fact, the Internet is made up of thousands of routers.
Firewall-Protecting the network A
firewall is also called a protective wall. It is a network security system located between the internal network and the external network, which can isolate the internal network from the external network. Generally, the firewall can protect the internal/private LAN from external attacks and prevent the leakage of important data. In the absence of a firewall, the router will blindly pass traffic between the internal network and the external network without a filtering mechanism. The firewall can not only monitor the traffic, but also prevent unauthorized traffic.
The difference between a switch and a router
Because a layer 3 switch can perform routing, some people may ask if there is a layer 3 switch in the network, do you need a router? The answer is that a router is still needed. Each device has its own function, and whether a router is required depends on many factors. On the one hand, for a small network with 10-100 users, the cost of a three-layer switch is too high, and choosing a suitable router can meet the network needs at a reasonable cost. On the other hand, you can install a switch module on the router to make it work like a three-layer switch. Therefore, the choice of equipment should consider factors such as scalability, software functions, hardware performance, application conditions, and cost, and cannot be generalized.
VeCloud is headquartered in Hong Kong and has branches in Beijing and Shenzhen, China. It is a technological innovation enterprise that provides cloud exchange network services as its core business to enterprises. Based on innovative cloud network technology, as well as high-quality global network and IDC data center resources, the VeConnect platform, which is directly connected to the world and quickly accessible, is launched to realize the direct connection of network service providers, IDC data centers, cloud service providers, and enterprise application service providers. Connect and communicate to provide enterprises with efficient, safe, stable and reliable network connection services. http://www.vecloud.com/products/ip-transit.html