messages log file - su

[Evan]

Andrew Galdes wrote:
> Hello all,
>
> I have found something interesting in a server log. This server is a
> proxy/mail gateway server. The logs show the following:
>
> Any ideas what's going on?
>
> Oct 29 19:15:35 mailsrv su: (to nobody) root on none
> Oct 29 19:15:35 mailsrv su: (to nobody) root on none
> Oct 29 19:15:35 mailsrv su: (to nobody) root on none
> Oct 29 19:15:35 mailsrv su: (to nobody) root on none
> Oct 29 19:15:35 mailsrv su: (to nobody) root on none
> ...
> Oct 31 10:00:29 mailsrv su: (to nobody) root on none
> Oct 31 10:00:29 mailsrv su: (to nobody) root on none
> Oct 31 10:00:29 mailsrv su: (to nobody) root on none
> ...
> Nov  5 11:00:28 mailsrv su: (to nobody) root on none
> Nov  5 11:00:28 mailsrv su: (to nobody) root on none
> Nov  5 11:00:28 mailsrv su: (to nobody) root on none
> Nov  5 11:00:28 mailsrv su: (to nobody) root on none
> Nov  5 11:00:28 mailsrv su: (to nobody) root on none
>
> Cheers,
> -Andrew
>
>
>   
Does the log show ssh logins or telnet logins?