PXEboot / NFS install and rebooting.

Neil Marjoram n.marjoram at adastral.ucl.ac.uk
Tue Nov 23 14:51:00 UTC 2004


Thanks guy, will look into these suggestions,

Neil.

John Summerfield wrote:

>On Tuesday 23 November 2004 11:40, Harry Hoffman wrote:
>  
>
>>Hi Neil
>>
>>run a quick perl script on the messages file to remove/change the
>>symlink in /tftpboot/pxelinux.cfg (or wherever you put it) when the
>>system have booted via tftp
>>
>>something like:
>>
>>ln -sf /tftpboot/pxelinux.cfg/C0A80201 default
>>
>>where default is a localboot.
>>    
>>
>
>I Like it.
>
>Even better, there's a package called pop-before-smtp that, amongst other 
>things, tails the log and Does Stuff when it gets a match. It's basically a 
>Perl script.
>
>I've taken it and made a generalised log tailer that (with a minimal 
>user-supplied script) could Do The Right Thing.
>
>What I envisage is my programs (I call it da-blocker) would 
>tail /var/log/messages and when it sees a host boot the installer it writes a 
>new config for that host that does not cause it to boot the installer.
>
>
>I'm looking for testers. The original purpose was to look for ssh abusers 
>trying to get a root shell on my box by employing the tried and trusty 
>Dictionary Attack.
>
>
>ps It helps if you inderstand Perl regular extensions or are prepared to learn 
>them from supplied docs. I don't wish to go into that topic any time soon 
>unless there's lotsa bucks in it.
>
>
>
>
>
>
>  
>

-- 
Neil Marjoram
Systems Manager
Adastral Park Campus
University College London
Ross Building
Adastral Park
Martlesham Heath
Ipswich - Suffolk
IP5 3RE

Tel: 01473 663711
Fax: 01473 635199




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