Check domain user authentication

Check-Auth.ps1

$cred = Get-Credential #Read credentials 
 $username = $cred.username 
 $password = $cred.GetNetworkCredential().password 
 $server = "" + ":389"
 # Get current domain using logged-on user's credentials 
 $CurrentDomain = "LDAP://$server" + ([ADSI]"").distinguishedName 
 $domain = New-Object System.DirectoryServices.DirectoryEntry($CurrentDomain,$UserName,$Password) 
 
if ($domain.name -eq $null) 
{ 
 write-host "Authentication failed - please verify your username and password." 
 exit #terminate the script. 
} 
else 
{ 
 write-host "Successfully authenticated with domain $domain.name" 
}