Authorization concept
Maintaining Authorization Objects (Transaction SU21)
No external services can be added manually in transaction SU24. To do this, you must turn on a permission trace that takes over. You can enable the permission trace using the auth/authorisation_trace dynamic profile parameter. You can enable this parameter by using the transaction RZ11 (Profile Parameter Maintenance) by entering the value Y as a new value and selecting the Switch to All Servers setting.
Once you have edited the role menu, you can customise the actual permissions in the PFCG role. To do this, click the Permissions tab. Depending on the quantity of external services from the Role menu, the authorization objects will appear. The authorization objects are loaded into the PFCG role, depending on their suggestion values, which must be maintained for each external service in the USOBT_C and USOBX_C tables. You can edit these suggested values in the SU24 transaction. Make sure that external services in the Customer Name Room also have the names of external services and their suggestion values in the tables maintained (see Tip 41, "Add external services from SAP CRM to the proposal values"). Visibility and access to external services is guaranteed by the UIU_COMP authorization object. This authorization object consists of three permission fields: COMP_NAME (name of a component), COMP_WIN (component window name), COMP_PLUG (inbound plug).
Development
In contrast to storing passwords in the form of hash values, the user ID and password are transmitted unencrypted during the login of the client to the application server. The Dynamic Information and Action Gateway (DIAG) protocol is used, which may look somewhat cryptic but does not represent encryption. In addition, there is no cryptographic authentication between the client and the application server. This applies not only to communication between the user interface and the application server, but also to communication between different SAP systems via Remote Function Call (RFC). So, if you want to protect yourself against the access of passwords during the transfer, you have to set up an encryption of this communication yourself.
In the SAP system, passwords are locked when the maximum number of allowed password login errors is reached. This counter is reset with a password each time you successfully log in. In addition, an initial password can be locked when its validity has expired. Both the validity of the initial password and the maximum value for password login errors are set using profile parameters. For details, see Tip 4, "Set password parameters and valid passwords characters". A password lock only prevents a user from logging in via his password, because the number of errors is only evaluated if the login is done by password. If a login is now made via other authentication methods (such as SSO), these are not affected by the password lock. This also applies to internal expiration procedures (such as background jobs) because you do not need to register a password. This prevents, for example, denial-of-service attacks, which first cause a password to be locked in order to block internal processes. Eine Ausnahme von dieser Regel gibt es allerdings: Auch wenn andere Authentifizierungsverfahren genutzt werden, prüft das System, ob der Benutzer dazu in der Lage ist, sich mit einem Passwort anzumelden. Wenn dies der Fall ist und das Passwort gerade geändert werden muss, wird diese Änderung vom Benutzer abgefragt. Diese Abfrage können Sie aber auch mithilfe des Profilparameters login/password_change_for_SSO ausschalten.
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Please note that we can only recommend using the SAP_ALL profile for absolute emergency users.
You can now perform the individual steps of the audit along the definition in the audit tree.