Re: Help!! sparc Ultra5 w/ RH6.1 crashing

Just someone trying authenticate with user ftp several times a second:
Apr 30 21:45:45 kronos proftpd[32741]: kronos.ctel.net
(c187116086.telekabel.chello.nl[212.187.116.86]) - USER ftp (Login
failed): Invalid shell. 
Apr 30 21:45:53 kronos proftpd[32760]: kronos.ctel.net
(c187116086.telekabel.chello.nl[212.187.116.86]) - USER ftp (Login
failed): Invalid shell. 
Apr 30 21:45:53 kronos proftpd[32761]: kronos.ctel.net
(c187116086.telekabel.chello.nl[212.187.116.86]) - USER ftp (Login
failed): Invalid shell. 
Apr 30 21:45:53 kronos proftpd[32762]: kronos.ctel.net
(c187116086.telekabel.chello.nl[212.187.116.86]) - USER ftp (Login
failed): Invalid shell. 
Apr 30 21:45:53 kronos proftpd[32764]: kronos.ctel.net
(c187116086.telekabel.chello.nl[212.187.116.86]) - USER ftp (Login
failed): Invalid shell. 
Apr 30 21:45:54 kronos proftpd[32763]: kronos.ctel.net
(c187116086.telekabel.chello.nl[212.187.116.86]) - USER ftp (Login
failed): Invalid shell. 

[email protected] wrote:
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> To: "[email protected]" <[email protected]>
> Subject: Help!! sparc Ultra5 w/ RH6.1 crashing
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> I have an Ultra5 that hangs every 2 weeks or so for no reason (that's
> clear to me...)
> 
> (deletia...)
> 
> The only log entries in any of the logs during the time just before the
> last crash was someone probing our ftp server (proftpd 1.2.0pre10) Is
>                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>     could you elucidate on this in more detail?
> 
> there any script kiddie methods of bringing down the box that I haven't heard
> of?
> 
> ( more deletia...)
> 
> ------- End of Forwarded Message
> 
> ed
> 
> --
>   Ed Franks                      |  Contracted to :
>   SysAdmin - Solaris/SunOS/Linux |    CIO Office
>   UNISYS Federal Systems         |    Air Force Research Lab
>   Albuquerque, NM                |    Kirtland AFB