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avi9526

Member

Registered: 2015-05-15

Posts: 116

Samba Domain Controller SID UID overlap

I created domain controller and file share server with latest samba.

But got problem, "Authenticated users" could not reach required folder
And after digging problem I have found that for

wbinfo -U $(wbinfo -S S-1-5-11)

does not give S-1-5-11

Some other group ("Schema Admins") was mapped to same UID (or GID) as "Authenticated users" (S-1-5-11)

ldbedit -e nano -H /var/lib/samba/private/idmap.ldb

was missing "S-1-5-11"

Recreating domain (multiple times) helped, and now its seems to be ok (problem is gone). But I not sure if I safe for future.

My config

# Global parameters
[global]
        log level = 1 auth_audit:3 auth_json_audit:3

        dns forwarder = ***
        netbios name = ***
        realm = ***
        server role = active directory domain controller
        workgroup = ***
        idmap_ldb:use rfc2307 = yes
        smb encrypt = required

        full_audit:failure = none
        full_audit:success = pwrite write rename
        full_audit:prefix = USER=%u|IP=%I|MACHINE=%m|VOLUME=%S
        full_audit:facility = local7
        full_audit:priority = NOTICE

        #vfs objects = acl_xattr
        map acl inherit = yes
        inherit acls = yes
        inherit owner = yes
        inherit permissions = yes

[sysvol]
        path = /var/lib/samba/sysvol
        read only = No
        vfs objects = full_audit

[netlogon]
        path = /var/lib/samba/sysvol/***/scripts
        read only = No
        vfs objects = full_audit
[nfs]
        path = /home/samba/nfs
        read only = No
        vfs objects = full_audit
        full_audit:success = none
        full_audit:failure = none
        #vfs objects = acl_xattr
        #acl_xattr:ignore system acls = yes
        #acl_xattr:default acl style = windows

Was wondering if anyone had similar problem or know why that could happen (obviously I can't debug this problem anymore).

Last edited by avi9526 (2021-06-02 02:33:53)