Accessing LinkedServer properties via SQL Server SMO API

I have a powershell script to iterate through a list of LinkedServer objects in a SQL Server with some code like this:

foreach($linkedServer in $instance.LinkedServers)
{       
... some code ...
}   

I want to find out information on the default security of a linked server. To see what I mean, load SQL Server Management Studio and open a linked server. If you don't have any, just create one to a remote server. Click on the Security tab and you will see a list of linked server login mappings (LinkedServerLogins collection in SMO). At the bott开发者_C百科om of the screen will be a default setting in the section called "For a login not defined in the list above...". I cannot find anywhere in the SMO object model to get to this information. Is it possible?

Thanks, Mark.

---

It seems to be in the linked server login properties:

foreach($linkedServer in $instance.LinkedServers)
{   
    "LinkedServer:" + $linkedServer.Name

    foreach($linkedServerLogin in $linkedServer.LinkedServerLogins)
    {
        " LinkedServerLogin:" + $linkedServerLogin.Name
        foreach($property in $linkedServerLogin.Properties)
        {
            "  Property:" + $property.Name + " - " + $property.Value
        }
    }
} 

Impersonate and RemoteUser are included in the properties.