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This article mainly introduces "how to establish a virtual network card simulation network adapter in Ubuntu". In daily operation, I believe many people have doubts about how to establish a virtual network card simulation network adapter in Ubuntu. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to establish a virtual network card simulation network adapter in Ubuntu". Next, please follow the editor to study!

If you know anything about network operation and IP networks, you should know that in most cases, only one IP address will be assigned to each network card. We are used to thinking that this is an one-on-one thing.

A network card corresponds to an IP address. A network card and its IP address on a machine can only bind or run a single network service / port. For example, if you want to run a web server on port 80, an IP address and port number can only be listened to by one web server. This is how it is designed.

Therefore, the network card and IP address is not an one-to-one relationship, you can create a virtual network card that can assign IP address separately. Therefore, a single physical network card can cluster unlimited sub-network cards or virtual network cards. Each can assign its own IP address to the corresponding port.

This short tutorial will show you how to do this on Ubuntu. This is a good way to run and test multiple network services with a single physical network card and a single port number on a single computer.

Go ahead, run the following command to open the network interface file.

Sudo gedit / etc/network/interfaces

Then follow the steps in the following figure to add as many virtual network cards as you want. By default, Linux assigns the name of eth0 to the first network card, so if your machine has only one network card, it will be named eth0.

Add virtual network cards, create multiple static network cards and name them eth0:1, eth0:2, eth0:3, and so on (eth0 followed by colons and numbers).

For each network card you create, make sure that the network is a different subnet, which is common sense. Virtual network cards can be IP addresses of the same subnet, as long as you need them.

When you are finished, save the file and restart the network service with the following command.

Sudo service networking restart

okay!

At this point, the study on "how to build a virtual network card simulation network adapter in Ubuntu" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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