Introduction to lan networking for wireless routers

Some friends need to connect to a wireless router on the basis of office or home cable to facilitate wireless Internet access in their laptops, or the office network interface is insufficient, this requires the knowledge of wireless route access to the LAN. We know that the ports on the Broadband Router are divided into WAN ports and LAN ports. A Broadband Router has the following features during work: data streams from the LAN to the WAN are not restricted by default through the router, and data streams from the WAN to the LAN are not allowed by default. (The wireless access part of the Wireless Broadband Router belongs to the LAN range.) That is to say, packets sent from the computer in the LAN are sent to the LAN port of the router by default, the router can be sent from the WAN port smoothly through the router, but after the Active packets from the WAN end enter the WAN port, the router will not let those packets pass by default. In reality, the default firewall rules of the vro block access to external data.

Therefore, with this principle, there are two different network modes. That is, 2nd routers use the wan port access network or 2nd routers use the lan port access network. The two methods are described in detail as follows: www.2cto.com 1. The wan port of the wireless router is connected to the lan port. This method has the disadvantage that the computers connected by the wireless router cannot access other computers in the LAN. The reason is as mentioned above. However, this is a closed internal environment with better security. The connection method is roughly as follows: a wireless router introduces signals from a LAN to a router, and then the router assigns a small lan ip address range to the computer connected to it, these computers form a small LAN inside a large LAN. Only these instances can communicate with each other. 2. the lan port of the wireless router is connected to the computer of the lan plug-in of the lan, and the remaining three lan ports or wireless links are inserted. In this way, you can access other computers in the LAN. The reason is as mentioned above. Www.2cto.com wireless routers act as wireless switches. All subordinate computers can communicate with other computers in the LAN. The connection method is as follows: a wireless router introduces signals from a LAN to a router, and then the router assigns a lan ip address to the computer connected to it. These computers are integrated into the LAN as a whole. Conclusion: The first method is suitable for people who need to access the Internet rather than work in the internal office. The second method is suitable for those who need to work with an internal computer. Both methods are not suitable for family use, because the home computer only needs a wireless route, of course, some people already have desktops connected to the cable route they bought at that time. If you have a network cable interface on the home wall, you can use the above method.

Of course, the above two access methods need to connect the wireless router to the computer before it can start to use. In the first method, you must first define the DHCP range of the wan port, which is the same as that of the lan port. Do not use the same ip address as the lan port. The second method does not define the wan port configuration, as long as the DHCP range of the lan port is defined as the same as that of the lan ip address. The second method can be used to bring a wireless laptop to a large LAN environment. If this routing is not secure, it may become a breakthrough for enterprises to leak data.