04-24-2009
Hello, I hope it's not too late. First, to answer your question - I don't think that with the current configuration you can overcome this security limitation. Probably those rules are enforced by your system administrator, so the best way is to communicate with the responsible person how to achieve your scp task. Probably, you can have a special designated user only for that task that will be allowed only scp from this host to a specific host, if your task's requirements are so simple. Else, perhaps you can go with more advanced rule, such as : -: ALL EXCEPT root user:10.191.4.244 - where IP address is fictional. This line means that ssh will only accept login access from root/user from IP address 10.191.4.244. If that is acceptable, you will need a modifications to PAM file as well.
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LEARN ABOUT CENTOS
sssd-simple
SSSD-SIMPLE(5) File Formats and Conventions SSSD-SIMPLE(5)
NAME
sssd-simple - the configuration file for SSSD's 'simple' access-control provider
DESCRIPTION
This manual page describes the configuration of the simple access-control provider for sssd(8). For a detailed syntax reference, refer to
the "FILE FORMAT" section of the sssd.conf(5) manual page.
The simple access provider grants or denies access based on an access or deny list of user or group names. The following rules apply:
o If all lists are empty, access is granted
o If any list is provided, the order of evaluation is allow,deny. This means that any matching deny rule will supersede any matched allow
rule.
o If either or both "allow" lists are provided, all users are denied unless they appear in the list.
o If only "deny" lists are provided, all users are granted access unless they appear in the list.
CONFIGURATION OPTIONS
Refer to the section "DOMAIN SECTIONS" of the sssd.conf(5) manual page for details on the configuration of an SSSD domain.
simple_allow_users (string)
Comma separated list of users who are allowed to log in.
simple_deny_users (string)
Comma separated list of users who are explicitly denied access.
simple_allow_groups (string)
Comma separated list of groups that are allowed to log in. This applies only to groups within this SSSD domain. Local groups are not
evaluated.
simple_deny_groups (string)
Comma separated list of groups that are explicitly denied access. This applies only to groups within this SSSD domain. Local groups are
not evaluated.
Specifying no values for any of the lists is equivalent to skipping it entirely. Beware of this while generating parameters for the simple
provider using automated scripts.
Please note that it is an configuration error if both, simple_allow_users and simple_deny_users, are defined.
EXAMPLE
The following example assumes that SSSD is correctly configured and example.com is one of the domains in the [sssd] section. This examples
shows only the simple access provider-specific options.
[domain/example.com]
access_provider = simple
simple_allow_users = user1, user2
SEE ALSO
sssd(8), sssd.conf(5), sssd-ldap(5), sssd-krb5(5), sssd-simple(5), sssd-ipa(5), sssd-ad(5), sssd-sudo(5),sss_cache(8), sss_debuglevel(8),
sss_groupadd(8), sss_groupdel(8), sss_groupshow(8), sss_groupmod(8), sss_useradd(8), sss_userdel(8), sss_usermod(8), sss_obfuscate(8),
sss_seed(8), sssd_krb5_locator_plugin(8), sss_ssh_authorizedkeys(8), sss_ssh_knownhostsproxy(8),pam_sss(8).
AUTHORS
The SSSD upstream - http://fedorahosted.org/sssd
SSSD
06/17/2014 SSSD-SIMPLE(5)