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Re: [Samba] Winbind authentication from different domain not working




config smb.conf
[global]
	realm = DOMAINB
	workgroup = DOMAINB
	security = ADS
	template homedir = /home/%U
	template shell = /bin/bash
	winbind expand groups = 1
	winbind separator = +
	winbind use default domain = Yes
	idmap config domainb : range = 3000001 - 4000000
	idmap config domainb : backend = rid
	idmap config domainc : range = 2000001 - 3000000
	idmap config domainc : backend = rid
	idmap config domaina : range = 1000001 - 2000000
	idmap config domaina : backend = rid
	idmap config * : range = 1000000-199999999
	idmap config * : backend = tdb

wbinfo --online-status
BUILTIN : online
SERVER01 : online
DOMAINB : online
DOMAINA : offline 

As you can see DOMAINA is offline, if we open up the firewall it is online and are able to logon with a user from DOMAINA on SERVER01. 


> 
>> We are running winbind(4.6.2) on member server(CentOS 7) connected to
>> a Active directory domain.
>> 
>> 1 Forest with 2 domains with a 2 way trust between them.
>> 
>> 
>> We want users from “DOMAIN A” be able to logon(via SSH) on a server
>> "SERVER01" in “DOMAIN B”. This works well if the “SERVER01" in
>> "DOMAIN B” can talk directly to “DOMAIN A” but when their is a
>> firewall between “SERVER01”  and “DOMAIN A” is doesn’t work anymore.
>> 
>> winbind tries to lookup domain controller “DOMAIN A” for user
>> validations directly. It is not using the trust and validate “DOMAIN
>> A” users via “DOMAIN B” domain controllers. 
>> 
>> The trust between the domains is working. We’ve put a windows 2008
>> machine in the same subnet. And was able to logon with a user from
>> “DOMAIN A” on the Windows server from “DOMAIN B”
>> 
>> Is their a way to inform winbind to use “DOMAIN B” to validate users
>> from “DOMAIN A” ?
>> 

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