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Anonymous users2024-02-07The LAN can also use the public IP, as long as you have enough money, you can buy out the IP of a network segment.
That is to say, the IP of 210 is used on the local area network, and the IP of 61 is used on the public network.
That is to say, your school does not use NAT or **, the role is to protect the intranet IP from external network attacks, and other users on the Internet seem to have your IP as the one of 61, but in fact it is the one of 210.
As for why the IP of the LAN will be found, I don't know, the working mechanism of IP138 is very magical......
This kind of address is not called a LAN address, but only a free IP network segment, because it is free and used by many people, so it will cause conflicts and cannot be used on the Internet, but it does not mean that the address on the Internet cannot be used on the LAN.
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Anonymous users2024-02-06This address should be the IP address of the public network
It's the IP of the local area network, and it can be found because someone has a record in the IP138 database, and everything that is found is found.
Main data of this site: Zhongshan University, Zhongshan City, Guangdong Province.
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Anonymous users2024-02-05LAN IP settings depend on how the network operator sets them.
It can be set to Class A, Class B, or General Class C.
Just go out with the server.
However, it is generally set to class C.
In your case, the IP settings of the LAN are also using the same Class A settings.
What ipconfig sees is the IP address assigned by the LAN.
What you see with IP138 is the external IP you actually use, that is to say, that is the real Class A address, which is recognized by the world, hehe.
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Anonymous users2024-02-04Although there are countless services and computers connected to the Internet, they are not in a chaotic and disorderly state, but each host has a unique address, which serves as the only sign that the host is on the Internet. We call this an IP address (Internet
protocol
address）。It is a string of 4 dot-divided numbers, each of which is between 0 256, e.g. 0 255 0 255 0 255 0 255 0 255;For example, 202 202 96 33 is the IP address of a host server.
Another way of representation gets rid of the monotony and hard to remember shortcomings of numbers, and uses the domain name dn (domain
name), that is, a literal name representing the host, such as www lg com cn is the domain name of a company's hosting server. dns（domain
Namesystem) The domain name server system translates the image text domain name into the corresponding numeric IP address. Through the above-mentioned IP, domain name DN, and domain name system DNS, each host is given a unique positioning on the Internet.
Intranet and public are two ways to access the Internet.
Computers on the intranet access the Internet through a public gateway using the NAT (Network Address Translation) protocol.
A computer on the intranet can send a connection request to other computers on the Internet, but other computers on the Internet cannot send a connection request to a computer on the intranet.
Public network access mode: The IP address obtained by the computer accessing the Internet is a non-reserved address on InetNet. Computers on the public network and other computers on the Internet can access each other at will.
It's more like a network problem, 1. Replace the network cable. >>>More
How to solve the problem that the IP address of the computer is wrong and the network cannot be connected.
(d) The address is on the network segment The slash has the meaning of "to" and "between".
Because the IP address space is insufficient, it is impossible for telecommunications to assign a public IP address to each user, so there are many ways to use experimental addresses, that is, many conversion technologies are used to solve the problem of IP addresses, such as: a school may have tens of thousands of computers, but the current IPv4 address can not be allocated so much, so you can use NAT technology to convert the intranet address or the experimental address into the address of the public network, and some use the address pool. In this way, from the outside world, it is one of those public network addresses, and the general Internet café often has only 1-2 addresses, so after the conversion, it is always that address, and the current IP address in China is charged 100 yuan for 1 month, so that the Internet café may use less IP address nearby.
Unlimited, theoretically unlimited, in fact, China Telecom, China Unicom, and China Tietong are all 3 large local area networks. However, the specific number also depends on the bandwidth of your public network line, how many ports your router has (how many computers can be accommodated), and if the actual ** connection is not enough, you can also connect to the switch and then connect n routes... And so on infinitely. >>>More