The difference between the internal and outer net-CodePudding

For a period of time before the concept, I always can't figure out the network must be connected to the external Internet, thought the network online are those a lot of people say that, but when I put the idea into the cloudstack network configuration, only to find that in fact is not like that, internal and external network is relative, such as laboratory belongs to the Intranet, so laboratory outside are belong to the network, for example, for a school is a local area network (LAN), but the access of the Internet is the network IP (IP) operator to school, when I was in deploy cloudstack advanced network need to two network CARDS, a used to cloudstack internal network, a used to connect to outside "net", said the network is actually another network segment lans, such as "internal network" (cloudstack internal communication network) is 192.168.0. XXX. The outside "net" can make any different network segments, such as can be 192.168.1. XXX. But those people are online say 10 192 at the beginning of the beginning and Intranet, who died in the introduction to me this confusion, do you think so??

CodePudding user response:

Family, the enterprise local area network (LAN) commonly used 192.168 and 10.0 at the beginning of the segment, while local area network (LAN) connected to the Internet, but use NAT gateway, and the router is not the same as in the Internet,
Only NAT gateway in the local area network (LAN) has one or several Internet IP addresses, all LAN machines are Shared these IP addresses, achieve access to the Internet,
A network in the Internet, each host is assigned a unique IP address, and have the same network segment and the subnet mask, if you want to visit the machines in the network, network, communication can be directly; If access to other network (network segment and subnet mask of at least one), just send an IP router, pathfinding forwarded through a router,
Understand the difference between the LAN and Internet, will be clear,

CodePudding user response:

To know about the definition and allocation principle of IP,