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I'm creating a hacking challenge as a project in university.
Somewhere in the middle of the challenge the challengers will receive a user name "guest" and a password to enter one of my Linux virtual machines (via ssh).
I want this "guest" to be able to read only one specific file (just read and not to modify or delete), and I also want to make sure this user can't write, read, create, delete or modify any other directories and files (except that one specific file I had mentioned before).
How do I create such a user and such a file?
Moshe9362
Posted 2017-03-09T23:18:59.907
Reputation: 11
A useful resource is this answer: https://superuser.com/questions/149404/how-can-i-create-an-ssh-user-who-only-has-permission-to-access-specific-folders . Also there exist restricted versions of shells rsh rbash rzsh etc if a sftp chroot is too restricted.
– hyph – 2017-03-10T01:29:45.330@hyph thank you for this resource. The meaning of this stage is using grep/find correctly to find the specific file, so I guess that sftp is too restricted to me. I will have a look at the shells you have mentioned above, thanks. – Moshe9362 – 2017-03-10T06:47:32.857
Read this. – Kamil Maciorowski – 2017-03-11T04:56:47.473