There once was a B2 X, if memory serves...

Date: 2016-04-23 11:27 am (UTC)
From: (Anonymous)
I used to run Trusted Solaris 7, to separate possibly-unfriendly customers, and it would happily put up windows with the category and security level shown, and refuse to copy between them if the recipient's credentials didn't dominate the sender's.

The category stuff would work well with SELinux, and I'd use it today if I could. The levels (Secret, Top Secret, etc) less so.

--dave collier-brown
Identity URL: 
Account name:
If you don't have an account you can create one now.
HTML doesn't work in the subject.


If you are unable to use this captcha for any reason, please contact us by email at

Notice: This account is set to log the IP addresses of everyone who comments.
Links will be displayed as unclickable URLs to help prevent spam.


Matthew Garrett

About Matthew

Power management, mobile and firmware developer on Linux. Security developer at Google. Ex-biologist. @mjg59 on Twitter. Content here should not be interpreted as the opinion of my employer.

Expand Cut Tags

No cut tags