Cygwin ssh and Windows authentication

Andrey Repin
Sun Jul 19 22:50:00 GMT 2015

Greetings, Jarek!

> I'm still quite new to Cygwin. I'm using the most recent version to 
> install the ssh component on Server 2012R2 member server since it 
> happened to become a requirement for certain users. The problem I have 
> is to understand how to allow access for domain groups. I read the new 
> version doesn't even need the /etc/passwd and /etc/group files any more 
> but I couldn't see any explanation as to how to allow users or groups 
> permission to ssh to the cygwin sshd server.

Short version is that you need SSH server running under domain user.
Which needs to be created prior to starting ssh-host-config.

> Running ssh-host-config answering yes to all questions except the one for
> using other user than the cyg_server I set up the ssh daemon. Not knowing
> any other way I created the /etc/passwd file with $mkpasswd -l > /etc/passwd

These files no longer need, but in your specific case, you actually just
screwed your setup.

> which dumped all local users into the file. I successfully added a domain user
> with $mkpasswd -u [domain_user] -D [domain] >> /etc/passwd.

That's not how it works.

> This worked just fine creating the /home/[user] folder I think although 
> I haven't checked if it didn't get created earlier since I installed 
> Cygwin under that user account.  No idea though how to get this working 
> without the use of /etc/passwd file. I then created the /etc/group file 
> and added my selected domain user group to it. Unfortunately in this 
> case members of the group cannot connect via ssh. I don't know if there 
> is a way to list all users including group members with access 
> permissions. $net user lists only users. I tried $net group but this 
> seems to be limited to DCs only which I have no access to. Could someone 
> please explain how can this be set up and what tellls Cygwin who can 
> connect and who can't?
It was there all the time.

With best regards,
Andrey Repin
Monday, July 20, 2015 01:35:00

Sorry for my terrible english...

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