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Permissions 777 mean disabling any access control

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Permissions 777 mean disabling any access control. That is a dangerous solution, but I saw such solutions implemented in very small research groups which consists of qualified researchers. This is kind of implicit granting everybody “root” access to created files.

So for a small group say less than 12 highly qualified in Linux researchers (say, able to pass LINUX+ CompTIA exams) such solution might probably acceptable, although the danger remains. If this solution is preferred by management, please make sure that everybody passed this exam.

For any larger group you are playing with fire because as chances opfrigue action increase with the size of the group (probably exponencially ;-) So mistake of a single person can wipe out the qwork if the whole group for a day or a weeek depending on backup scehdule. For very large data sets this is unccespable policy for any size of the group because danages can large and reliability of backup diminished with the growth of the size of the dataset.

So ther banace here is a real poosibility that somebody can accidentally wipe out data, vs slightly simpler access to all the files, which it does make researchers life a little bit easier. The level of secutiry if low -- everybody who have qccess to the server have access to all data with persmission set to 777. Whether this is an adequate level of security is up to the management to decide.

I think that creation and maining well defined groups is a safer bet. The “freedom” for researchers in 777 solution is very illusive.

Please understand that SGID bit does not matter in 777 environment as everybody is a member of the “other” (world) and there is no any segregation of access between members. So group ownership attribute does not matter anymore.

The same is probably true about SETUID solutions, unless we are talking about SETUID root.


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