Monitoring AD users

iroal

@thwr

I like Netwrix Apps, they have a lot of free apps like:

https://www.netwrix.com/netwrix_password_expiration_notifier.html

bbigford

We also use Netwrix.

MattSpeller

IIRC scripts that send 14, 7, and 3 day notices by email

"change your password, idiot"

thwr

@MattSpeller
yeah, I guess that's something you need to do by hand. Will just build a small PowerShell script and use a scheduled task for it.

DustinB3403

Powershell to monitor last login I'll share my script tomorrow

thwr

@DustinB3403 said in Monitoring AD users:

Powershell to monitor last login I'll share my script tomorrow

Thanks, but as far as I remember, there's a problem with the last logon attribute. It doesn't sync between DC's by default. I need to check that, but I think I wrote a script some time ago that will query all your DCs directly, not only the one the executing user is logged on to.

coliver

I think PWM can do password expiration notifications. I haven't looked into it too deeply. we're planning on deploying it this summer.

DustinB3403

Oh yeah.

#List acconts not logged into within the past X (90) days
Import-module activedirectory

$domain = “YOUR-DOMAIN”

$DaysInactive = 60

$time = (Get-Date).Adddays(-($DaysInactive))

# Get all AD User with lastLogonTimestamp less than our time and set to enable

Get-ADUser -Filter {LastLogonTimeStamp -lt $time -and enabled -eq $true} -Properties LastLogonTimeStamp |

# Output Name and lastLogonTimestamp into CSV

select-object Name,@{Name=”Stamp”; Expression={[DateTime]::FromFileTime($_.lastLogonTimestamp).ToString(‘yyyy-MM-dd_hh:mm:ss’)}} | export-csv C:\OLD_User.csv –notypeinformation

thwr

@DustinB3403 Thanks Dustin.

thwr

@thwr said in Monitoring AD users:

@DustinB3403 Thanks Dustin.

Inactive users (based on Dustin's script):

function TW:Get-InactiveADUser 
{
    param 
    (
        [parameter(Mandatory=$true)]
        [string]$DaysInactive,
        
        [parameter(Mandatory=$true)]
        [string]$SearchBase
    )

    $pointInTime = (Get-Date).Adddays(-($DaysInactive))

    # Fetch users
    $result = Get-ADUser `
        -Properties EmailAddress,LastLogonTimeStamp,DisplayName `
        -SearchBase  $SearchBase `
        -Filter { PasswordNeverExpires -eq $False -and Enabled -eq $true -and (LastLogonTimestamp -lt $pointInTime -or LastLogonTimestamp -eq 0) } | 
        Sort-Object -Property lastLogonTimestamp 
    return $result
}

Usage:

TW:Get-InactiveADUser -DaysInactive 30 -Searchbase "OU=aaa,OU=bbb,OU=ccc,DC=xxx,DC=yyy,DC=zzz"

thwr

Users who keep entering wrong passwords (will query every DC in your domain, may be slow with lots of users):

function TW:Get-ADUserBadPasswordCount 
{
    param 
    (      
        [parameter(Mandatory=$true)]
        [string]$SearchBase
    )

    # Fetch users 
    $users = Get-ADUser `
        -Properties BadPwdCount,EmailAddress,LastLogonTimeStamp,DisplayName `
        -SearchBase  $SearchBase `
        -Filter { Enabled -eq $true } 

    # Add "column" to output object
    Add-Member -InputObject $users -NotePropertyName TotalBadPwdCount -NotePropertyValue "0" -Force

	ForEach($user in $users)
    {
        $count = 0

        # Query each DC
        ForEach($dc in Get-ADComputer -Filter "*" -SearchBase "ou=Domain Controllers,DC=xxx,DC=yyy,DC=zzz") 
        {
            $localuser = Get-ADUser -Server $dc.DNSHostName -Filter "*" -Properties BadPwdCount -SearchBase $user.distinguishedName
            $count = $count + $localuser.BadPwdCount
        } 
        
        $user.TotalBadPwdCount = ($count).ToString()
    }
    
    return $users
}

Usage:

TW:Get-ADUserBadPasswordCount -SearchBase "OU=aaa,OU=bbb,OU=ccc,DC=xxx,DC=yyy,DC=zzz" | ft DisplayName, sAMAccountName, EmailAddress, TotalBadPWdCount -AutoSize

Output looks like this:

DisplayName             sAMAccountName   EmailAddress         TotalBadPWdCount
-----------             --------------   ------------         ----------------
Some User      	        someuser1 	 [email protected]        {17}             
Some Other User         someuser2 	 [email protected]   {0}

JaredBusch

There are multiple examples of powershell scripts that will email users with near expiring passwords. I really need to get off my ass and set on up on the DC at a few of my clients with constant problem users...