Introduction
address is divided into private addresses and public addresses. The so-called private address is the IP address used to allocate the internal network allocation addresses in the IP address of the enterprise in A, B, and C. Private addresses are mainly used to allocate in a local area network, which is invalid on the Internet. This can be well isolated on the LAN and the Internet. Private addresses cannot be identified on the public network, and the internal IP addresses must be converted to an IP address available on public online via NAT to implement internal IP addresses and external public networks. The public address is the address used in the WAN, but can also be used in the LAN, except that the address other than the private address is public address.
Private IP is an inlet address, which is specifically used to use within the organization. RFC1918 defines a private IP address range:
a: 10.0.0.0 ~ 10.255.255.055 is 10.0.0.0/8 (0 >< (/B: 172.16 . 0.0 ~ 172.31.255.255 172.16.0.0 / 12
C: 192.168.0.0 ~ 192.168.255.255 is 192.168.0.0.0/16< B>
These addresses are not allocated by the Internet, and they will not be routed on the Internet, although they cannot connect directly to the Internet, but can still communicate with Internet through technical means (NAT technology ). We can choose the appropriate address class as needed, and use these addresses like a public IP address in the internal LAN. On the Internet, some of the devices that do not need to communicate with the Internet, such as printers, manageable hubs, etc., can also use these addresses to save IP address resources.
Public address
Public address (Public Address) is responsible for the Inter NIC (Internet Network Information Center). These IP addresses are assigned to registration and propose an organization that applies for Inter NIC. Access the Internet by it directly.
IP Basics
IP address is an internet protocol address (Intemet Protocol Address), also known as an internet protocol address. The LP address is a unified address format provided by the IP protocol, which assigns a logical address for each network on the Internet and each host to block the difference between the actual physical address. Assign an address for each unit host in the network for exact access to other devices in the network.
IP address type is divided into public addresses and private addresses, and public addresses are allocated to public networks to access the Internet directly. Private addresses are non-metoponic information, which can be used inside each organization. We often use private addresses, network cameras, switch router configurations, such as: 192.168.1.1; 10.0.0.1 Private address.