Connecting and downloading plugins

Hello,

Wanted to download a plugin and noticed that I have to download Dashboard plugin in order to get any other plugin. Is that correct?

If, yes, then I have a huge problem. The server (VPS) I use is managed and they for security reasons block all connecting trafic. I can open it by getting them the domain from which all downloads will be made, but that is the domain in your case? Is it https://premium.wpmudev.org, or are there any more different domains used for plugin and such?

Regards,
Martin