login.access, login and su.
tuaregmex at gmail.com
Mon Oct 15 16:27:10 PDT 2007
I need to restric the access to some accounts, we are using FreeBSD
4.10, this is the configuration for "login" in /etc/pam.conf
login auth sufficient pam_skey.so
login auth sufficient pam_opie.so no_fake_prompts
#login auth requisite pam_opieaccess.so
login auth requisite pam_cleartext_pass_ok.so
#login auth sufficient pam_kerberosIV.so try_first_pass
#login auth sufficient pam_krb5.so try_first_pass
login auth required pam_unix.so try_first_pass
login account required pam_unix.so
login password required pam_permit.so
login session required pam_permit.so
And this is the content of /etc/login.access:
-:ALL EXCEPT user user1 : ALL
If we do "su - user3" in FreeBSD 4.10 the result is that we become
"user3" succesfully, and no restricction message appears.
% su - user3
With FreeBSD 6.1/6.2, we are able to restrict the access if the
account isn't appear in /etc/login.access, for example:
-:ALL EXCEPT user user1 user2 : ALL
And this is the content of /etc/pamd./login:
# PAM configuration for the "login" service
auth required pam_nologin.so no_warn
auth sufficient pam_self.so no_warn
auth include system
account requisite pam_securetty.so
account include system
session include system
password include system
If we are using the account "user" and whant to change to "user3"
using "su -" this never happen:
% su - user3
pam_login_access: pam_sm_acct_mgmt: user3 is not allowed to log in on /dev/ttyp0
Which is exactly what we need, but for FreeBSD 4.10.
There are differences between 4.10 and 6.1/6.2 for the configuration
of PAM and all it's modules, but the configuration for login.acces is
We read the documentation at the FreeBSD site about login.access and
there is no difference for the sintaxis of this file.
We also had read the man for login/pam/login.conf/login.access.
The file "login.conf" is the same for 4.10 and 6.1/6.2, we didn't
modified it's content.
Is there another configuration file we are missing that should be
modified to restrict the "user" become "user3" using "su -" in FreeBSD
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