Question

I would like to enumerate all DCs in a domain (where current user nor computer are member of, and also not in the same forest).

I found this nice method

Domain domain = Domain.GetCurrentDomain();
foreach (DomainController dc in domain.DomainControllers)
   ...

However, I could not figure out how to do a remote connect with to
get the right domain context.

Connecting via

DirectoryEntry child = new DirectoryEntry("LDAP://" + server + "/" + objectDn, userName, password);

works well. But I have no Idea how to get this together.

Answer 1

using System.DirectoryServices.ActiveDirectory;

…
….

DirectoryContext dc = new DirectoryContext(DirectoryContextType.DirectoryServer, "ip", "user", "pwd"); //change parameters here
Forest forest = Forest.GetForest(dc);    
Console.WriteLine(forest.Domains.Count); 

the above works for me (gives the correct domain count)

I am testing with a network admin account obviously. Hope this helps