I think ths is a general question but I'm not sure if it needs to be migrated because of the technical and security related nature of the beast in question.

For my current client we have an SFTP key set up in FileZilla to configure our current connection and file transfers.

This is a multi-user environment, we have around 50-60 people who could-would potentially use this key at any given time.

I keep getting errors when logging in, and when I reach out to the company that hosts the FTP servers, they tell me

> 
> "Multiple users have logged in without a log out. We don't support this."
> 
> 
> 

My question is:

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> Why in a multi-user environment, would this be an appropriate set-up? Wouldn't you in fact expect this behavior, and try and support it for a given block of IP Addresses?
> 
> 
> 

Is there some recommendation I could make for this set up to make it easier for us to access this server? I know it's probably subject to company policy, but it's quite frustrating..

Perhaps I'm missing something from a security standpoint, but I just can't wrap my mind around it. Thanks!

> 
> ERROR: disconnected: No supported authetnication methods available
>  (server sent:)
> 
> 
>