Disable multiple login[FC or *NIX]?

[ankush grover]

On 9/12/06, Deepak Shrestha <d88pak at gmail.com> wrote:
>
> Hi,
>
> Is there a way to limit the particular user login only once in FC (or
> *nix)??or disabling the double logins. Currently a user can log in
> from different terminals using same account at same time and do
> various things. I have tried also Putty and able to login using same
> login name from windows machines. This is good for troubleshooting
> purposes like when situation goes wrong, user can log in from
> different terminal and fix it, but this also brings the anomali of two
> persons being present at the different place at the same time.
>
> I guess this is not an concern for desktop users but exposing as
> server might need considering this. At present my question is more on
> a curiosity than of practical use.
>
> Thanks!
>
>
http://www.cyberciti.biz/tips/openssh-root-user-account-restriction-revisited.html
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