About Port ing in VirtualBox

Just like another Baidu knowledge point, I really don't understand what those people on the internet want to do. What are simple things? Why do they have to talk so complicated? Amazing?

Name: Whatever you like, based on the note principle, you can write anything about your application using this port forwarding. Otherwise, you will forget it.

Protocol: You don't need to talk about it. TCP is UDP. You can write about what protocol your application uses for transmission.

Host IP Address: in short, it is the IP address of your physical machine. For example, if my host is 192.168.1.114, my virtual machine is installed on this physical machine, there is also a NIC generated by a virtual machine, with the address "192.168.56.1". I don't know if I can use this to map rows. The other one will not try this line anyway.

If another instance in the same LAN accesses the services on the Virtual Machine on your platform, the IP address of your physical Nic is used.

Host port: if you use a port that is not occupied, it is OK. For convenience, it should be the same as the sub-system Port (if it is not occupied)

Subsystem IP Address: the IP address of the NIC in the system of your virtual machine

Subsystem port: Generally, a specific service corresponds to a specific port, depending on your settings.

As shown in the figure, in a word, external access accesses your "192.168.1.114: 5900", which will be mapped to the "10.0.2.15: 5900" of the Virtual Machine by VirtualBox.

This is an operation on a virtual machine. The IP address ing between the Intranet and the Internet is the same principle. When you access the IP: Port of a public network from a network, the device (switch? Router? You only need to have the ing function !), The request will be forwarded to the Intranet computer that actually responds to the service according to the rules for processing. The processed results will then be forwarded back to the requesting computer on the public network in the opposite way.

Well, I still want to say something, just a simple thing like TMD. It must seem so advanced! What you write is clear, what others see is clear, and you TMD will die! (If the document is not well written, you can forgive me for being clear about it. The intention should be delayed! Or you should stop writing it !)

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