Sponsored Content
Top Forums UNIX for Advanced & Expert Users Prevent user from creating new user from his login Post 303032101 by bakunin on Monday 11th of March 2019 10:33:03 AM
Old 03-11-2019
Quote:
Originally Posted by jim mcnamara
Off the top of mu head, this seems contradictory. If you have read, write, and execute on any file, that means new user creation is possible. If you employ ACL's and block this special user from accessing files then what happens when the user employs setfacl (or whatever tool) to undo your change to the ACL?
Absolutely! If someone is allowed to do "everything" then everything it is - no less!

I remember a former customer took away root privileges for a certain system from us system administrators but because we were still supposed to edit a certain file owned by root (!) they created a sudo rule for us:

Code:
myuser ALL=(ALL)   vi /path/to/some/dir/*

They wondered why we still became root whenever we needed to and probably still are wondering, LOL!

Quote:
Originally Posted by jim mcnamara
Note: Linux system roles are beginning to receive support, I think the concept was demonstrated well in Solaris 10. I do not know how robust the support of roles using Ansible is in your version of RH.
I don't know Solaris too well but RBAC (Role Based Access Control) is available in AIX for about 10-15 years. I would strongly prefer jumping out of the next available window to using it, though. It makes the administration of a system practically impossible (yes, i know all the "but"s - i still stand by what i said). My advice: stay away as far as you can. If you can't do it with standard UNIX privileges it isn't worth doing and/or your model is plain wrong.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Creating a user that can't login

I need to set up/modify a user account on one of our machines which will allow the user to stay on the system, but not use their user id and password to login to the machine. It is for the purposes of an ftp user, so that nobody can then login as ftp/passwd. Ta.:) (2 Replies)
Discussion started by: danhodges99
2 Replies

2. AIX

Limiting length of user in while creating user

Hi all, I am a newbe to aix 5.2. I want to specify the characters used by users while creating user in aix like specifying the length of the password should i use some sript for that if it is then please let me know how to do this if yes give me the link for the scripts. Thanks in advance ... (2 Replies)
Discussion started by: Satya Mishra
2 Replies

3. UNIX for Dummies Questions & Answers

I create user but i cant login the user i created.

I created a user, i login as a root. I add him in the group where he can access and login as a root! I checked it in users' list and in group's list, he is there. My problem is this, I cant login using the username/account I just created! What should i do to use and login the user/account i've just... (5 Replies)
Discussion started by: jerome
5 Replies

4. Shell Programming and Scripting

Running script from other user rather than login user

Hi, My requirement is that i am login from ROOT in a script but when any command is coming which is logging to sqlplus then i have to run it with normal user as only normal user have permission to connect to sqlplus . i tried making a script like this : #! /bin/ksh su -... (3 Replies)
Discussion started by: rawatds
3 Replies

5. Cybersecurity

prevent user from excute command

Dears I want to prevent users from doing spesific command "history -c" or "history" in general How can I do ? (4 Replies)
Discussion started by: reaky
4 Replies

6. IP Networking

how to prevent a user from downloading on lan

hi all, i want to prevent users downloading files in the office as bandwidth becomes very low and affects work. one of my friend tried to close the connection using ethercap but this does not work. i have a debian desktop while other users use MS W!ndows. Please provide any help. Thanks (5 Replies)
Discussion started by: coolatt
5 Replies

7. Shell Programming and Scripting

How to Login as another user through Shell script from current user[Not Root]

Hi Every body, I would need a shell script program to login as different user and perform some copy commands in the script. example: Supppose ora_toms is the active user ora_toms should be able to run a script where user: ftptomsp pass: XXX should login through and run the commands ... (9 Replies)
Discussion started by: ujjwal27
9 Replies

8. Shell Programming and Scripting

Login into another user from user inside script

now i have logged in username : ramesh in unix Now i have to created script file to login into another user and have run a command inside that user and after executing the command i have to exit from that user. Inside script, i have to login into su - ram along with password : haihow and have to... (4 Replies)
Discussion started by: rammm
4 Replies

9. Shell Programming and Scripting

Prevent the user from changing his directory

Hi could some let me know how to prevent user from changing his home directory....... Thanks in advance.... (1 Reply)
Discussion started by: Revanth547
1 Replies

10. Shell Programming and Scripting

Prevent the user from changing his directory

Hi could some let me know how to prevent user from changing his home directory....... Thanks in advance.... (6 Replies)
Discussion started by: rahul547
6 Replies
roles(1)							   User Commands							  roles(1)

NAME
roles - print roles granted to a user SYNOPSIS
roles [ user ...] DESCRIPTION
The command roles prints on standard output the roles that you or the optionally-specified user have been granted. Roles are special accounts that correspond to a functional responsibility rather than to an actual person (referred to as a normal user). Each user may have zero or more roles. Roles have most of the attributes of normal users and are identified like normal users in passwd(4) and shadow(4). Each role must have an entry in the user_attr(4) file that identifies it as a role. Roles can have their own authorizations and profiles. See auths(1) and profiles(1). Roles are not allowed to log into a system as a primary user. Instead, a user must log in as him-- or herself and assume the role. The actions of a role are attributable to the normal user. When auditing is enabled, the audited events of the role contain the audit ID of the original user who assumed the role. A role may not assume itself or any other role. Roles are not hierarchical. However, rights profiles (see prof_attr(4)) are hierarchical and can be used to achieve the same effect as hierarchical roles. Roles must have valid passwords and one of the shells that interprets profiles: either pfcsh, pfksh, or pfsh. See pfexec(1). Role assumption may be performed using su(1M), rlogin(1), or some other service that supports the PAM_RUSER variable. Successful assumption requires knowledge of the role's password and membership in the role. Role assignments are specified in user_attr(4). EXAMPLES
Example 1: Sample output The output of the roles command has the following form: example% roles tester01 tester02 tester01 : admin tester02 : secadmin, root example% EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error occurred. FILES
/etc/user_attr /etc/security/auth_attr /etc/security/prof_attr ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
auths(1), pfexec(1), profiles(1), rlogin(1), su(1M), getauusernam(3BSM), auth_attr(4), passwd(4), prof_attr(4), shadow(4), user_attr(4), attributes(5) SunOS 5.10 14 Feb 2001 roles(1)
All times are GMT -4. The time now is 06:26 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy