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Local passwd and group files can be used to resolve IDs and usernames. You can download the current version of the local files from the NAS server, which also provides syntax, examples, and additional details. After the files are edited with the user details, they can be uploaded back to the NAS server.
The passwd file uses the same format and syntax as UNIX-based operating systems so an existing file from a host could also be leveraged for the NAS server. Figure 29 shows the syntax and an example of the entry in a passwd file. The comment, home directory, and shell can be empty since they are not used by the NAS server. The NAS server is only interested in the username, hashed password (used for FTP authentication), UID, and primary GID.