How To Restrict Access To Su Command

Webune Support

Wed Mar 31, 2010

1 Comments

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if you are reading this topic its probably because you want to disable or restrict access to a user for using the su command to gain access to the superuser account. i will show you what file you need to edit.

the file you will need to edit is the /etc/pam.d/su

you can find the file by listing all the file in the /etc/pam.d/ directory:

# ls /etc/pam.d/

there, you will see the su file, you can edit using your favorite text editor. (like VI for example) i like to use nano instead so you can send this command to edit the su file

# nano /etc/pam.d/su

webune

Wed Mar 31, 2010

this is what a tipical su file looks like:

#%PAM-1.0
auth            sufficient      pam_rootok.so
# Uncomment the following line to implicitly trust users in the "wheel" group.
#auth           sufficient      pam_wheel.so trust use_uid
# Uncomment the following line to require a user to be in the "wheel" group.
#auth           required        pam_wheel.so use_uid
auth            include         system-auth
account         sufficient      pam_succeed_if.so uid = 0 use_uid quiet
account         include         system-auth
password        include         system-auth
session         include         system-auth
session         optional        pam_xauth.so

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