How to exclude an AD OU from importing groups - active-directory

I have a piece of software that imports groups from certain OU's within AD. I have an OU that has four nested OU's within it and I only want to import from three of these. How do I exclude the one OU from importing?
There is the option within the software to use what's called a filter string, which I have been using to manually type in the filter to exclude this one OU from importing. The filter clearly isn't correct as the job imports from all of the OU's.
I want to exclude the UAT OU from importing so I tried the following filter:
(&(objectClass=Group)(!(ou:cn:=*_UAT)))
All groups within the UAT OU end in _UAT, which is why I tried the above filter. The job successfully ran but imported from all four OU's.
I want the import to only import AD groups from three of the four OU's I have nested within the Application OU.

There is no way to do this just in the query. There is no attribute called ou, which is why the filter you tried didn't work.
Starting in Windows Server 2012, there is an attribute called msDS-parentdistname, which has the distinguishedName of the OU, but it is a constructed attribute, meaning it's not actually stored; it's constructed at the time it is requested. That means you can't use it in a query.
There are two ways you can do this:
Change the search scope to "single level" so it does not search any nested OUs. You would have to search each of the three OUs separately this way.
Get all the results, and remove the unwanted results after the search. Check if the distinguishedName contains the name of the unwanted OU and, if so, discard it.

Related

Getting to connect users with an ldap with two groups

I have an application with which I would like to connect my ldap users.
I want two types of users to be able to log in: internal and external.
In the application that I deploy, three parameters are taken into account (ldapjs protocol, scope sub)
export LDAP_FILTER LDAP_BASEDN LDAP_UIDTAG
How do I get
"OU=Internal,OU=Users,DC=test,DC=example,DC=com"
and
"OU=External,OU=Users,DC=test,DC=example,DC=com"
members to connect to it?
How should I fill in these parameters knowing that the cn is username ?
Thank you for your help
I tried
export LDAP_FILTER (|(&(ou=Internal)(cn={{username}}))(&(ou=External)(cn={{username}}))
and many more
Those are OU's (organizational units) not groups. You cannot filter by OU in an LDAP filter. You use the Base DN to limit results to one OU. However, you can only use one.
You may be better off creating a group and adding all of the users from both OUs into that group, and then you can filter on the group, like this:
(memberOf=CN=MyAppGroup,OU=Groups,DC=test,DC=example,DC=com)
That should be the full distinguishedName of the group.

Department field in AD Computer Object?

I have a Powershell script that will import a csv file containing a list of computers and their respective owners, and then perform some queries on each. I am looking for a reliable way of maintaining this list so it's up-to-date and can be exported for Powershell consumption.
One idea, is that all of our computers in AD have their own respective OUs, and I am looking to use a field (Department if there is one) that will then be populated with the IT Owner. For example, in the Computers OU, there will be child OUs: "Finance Servers"; "Marketing Servers", etc. We can't use Description as this is already used.
Any ideas as I can't see additional fields or custom fields to play around with for each computer object?
Thanks
My recommendation would be to use the "ManagedBy" Property, however if you prefer to look over the options for yourself you can always open up powershell and run
get-adcomputer -identity "SomeServerName" -properties *
that will show you all properties that are available on that object.

How do I write a LDAP Query to search an OU for users that do NOT have an email address?

I know how to search AD to find all users with an email address but I need to include the syntax for a LDAP Query, can you help? Also, how would I export this list to excel?
Unfortunately, there is no way to determine an empty or null value using an LDAP query - what you would have to do is query all users, then write some business logic to find the ones with empty values in the mail property.
Finding all of them is quite easy, you could simply do :
(&(objectClass=user)(mail=*))

What does dsget use to query the directory?

I am in an organization with an Active Directory with a very deep nested group structure. I would like to query the directory to recursively find user members of a group from a Linux machine. On a Windows machine,
dsget group "dn_of_group" -members -expand
does exactly what I want and does it very quickly. When I tried to get the same results via LDAP with
(memberOf:1.2.840.113556.1.4.1941:=dn_of_group)
the query takes almost a minute to run. Does dsget use LDAP under the hood or does it use some other means to query the directory? And if so, is there any way for me to also use that?
Edit:
Clarified that I need the members which are users.
The framework 3.5 with System.DirectoryServices.AccountManagement Namespace provides a method that searches all groups recursively and returns the groups in which the user is a member. The returned set may also include additional groups that system would consider the user a member of for authorization purposes.
UserPrincipal.GetAuthorizationGroups()
The groups that are returned by this method may include groups from a different scope and store than the principal. For example, if the principal is an AD DS object that has a DN of "CN=SpecialGroups,DC=Fabrikam,DC=com, the returned set can contain groups that belong to the "CN=NormalGroups,DC=Fabrikam,DC=com
In the other direction you've got :
GroupPrincipal.GetMembers(bool recursive)
See Remarks

LDAP Query to exclude local proxyaddresses

I want to write an LDAP Query which excludes all the proxyaddresses from an user object which end in .local. I wrote a query like this (!(proxyAddresses=*#*.local)), however this removes all addresses from users which have a proxyaddress ending in local. I have been looking on the internet for days, however I didn't come up with a working solution. Any ideas?
An LDAP query allow you to retreive objects where attibutes match some values. For each object you can retreive the attributes you want but if an attribute is multi valued you can't select in a query the values you want. You retreive all the values for an attribute or none. You client program need to sort the result to eliminate the adresses you don't want.

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