Subject: Re: r/o filesystem restrictions for firewall?
To: Simon Burge <simonb@wasabisystems.com>
From: Andrew Brown <atatat@atatdot.net>
List: port-sparc
Date: 10/24/2000 10:40:20
>> theoterical secure level three? ie:
>>
>> no mounting or unmounting of filesystems...
>> no loading of ipf or ipnat rules...
>> no interface or route changes...
>> no opening disk devices, either character or block...
>> no time changes at all... (hmm...ntpd...after all, we want good time)
>> no setuid() calls or suid effect on programs...
>
>We really want a feature mask (or probably better a security sysctl
>MIB with separate knobs to disable these one by one), not an arbitary
>"level".
part of the security sysctl mib would have to be a knob that sets the
entire sysctl mib into read-only mode as well.
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