NIS+ principal names are sometimes confused with Secure RPC netnames. Both types of names are described in the security chapters of Part--2. However, one difference is worth pointing out now because it can cause confusion: NIS+ principal names always end in a dot and Secure RPC netnames never do:
Table 4-3 NIS+ Principal Names| olivia.sales.doc.com. | NIS+ principal name | 
| unix.olivia@sales.doc.com | Secure RPC netname | 
Also, even though credentials for principals are stored in a cred table, neither the name of the cred table nor the name of the org_dir directory is included in the principal name.