Can't access windows pc after setting up DSL connection

Question

After setting up DSL connection using the following command

sudo pppoeconf

I can't access Windows PC from my networks. Before setting DSL, I could access the network, but now I can't and it shows me this message.

Can anyone help me?

Answer 1

Start the "Network Connections" applications. You get a screen like this:

Select "Add". You get the following screen:

We'll start off for you "Office" connection. The selection in the combobox will be Ethernet. This is correct for your uses. You get the following screen:

As you can see, I named it "Office Connection". In the Device selector, select your physical network card. I can't say how it's named, but it will most likely look similar like mine (starting with en)

Click "Save". You now get back to the original dialog, with one more entry.

Select "Add" again, but this time, select "DSL". Again click "Create..."

You now get a screen to configure your DSL. As you can see, I named it "Home Connection". I do not know what you have to enter there. It depends on the information you got from your ISP:

Click on the Ethernet tab, make sure you select the same device as you did in the "Office Configuration".

Click "Save" when done.

You can remove all other configurations under "Ethernet" if you like. When you now click on the network configuration icon in the top right part of your screen (either looks like a wifi icon, or two arrows), you will get this:

You can now select the one you need depending on what network you are one.

The reason is that you need to configure the same network card for different, totally incompatible use-cases.