When you access files that reside on a NetWare server (that is, files under the /.NetWare/servername directories), the NetWare UNIX Client (NUC) manages your interaction with the NetWare server.
For example, if you try to read a file on a NetWare server, it is the NUC that sends your request to open (read) the file to the NetWare server. The NUC then waits as the NetWare server determines whether your NetWare login ID (the one you used to authenticate to the server) can read the file.
The NetWare server then responds to the request from the NUC. The NUC tells you the results of the request, which in the case of reading a file results in either the file being opened by the application or an error message.
The operations allowed on a NetWare file or directory (such as create, access or modify) are controlled by the NetWare effective rights of the NetWare-authenticated login ID. This is because the physical files being accessed reside on the NetWare volume.
For example, the UnixWare user root (UID=0), when attaching to a NetWare server as user User1, will only be allowed access to the server volumes based on User1's effective rights and will not have any special privileges on the server volume beyond those associated with the login ID User1.