Usage
Installation/updating of SAP systems based on SAP Netweaver
In every company with an SAP system, there is someone who is responsible for the SAP Basis. This person ensures the trouble-free operation of the SAP system. He or she accompanies maintenance work and intervenes in special situations, such as poor performance. Even for companies that hand over the operation of the basis to an external service provider, there are often still tasks from the user and authorization management environment at this point.
SAP Basis ensures smooth operation of the SAP Basis system. The SAP Basis system is a kind of operating system of the R/3 system or SAP ERP. It includes the three layers database, application and presentation. In addition, Basis includes many SAP middleware programs and administration tools. With Basis SAP applications can be used compatible and independent of operating system and database and can be enriched with the necessary data.
The Basis system comprises a total of three layers
User authentication is usually performed by entering a user name and password. This information is called user credentials and should only be known to the user, so that no third party can gain access to the system under a false identity. This post explains how a user's password protection can be circumvented and how to prevent it. SAP system legacy data The login data of a user, including password, are saved in the USR02 database table. However, the password is not in plain text, but encrypted as a hash value. For each user there are not only one but up to three generated password hashes. Different algorithms are used to calculate these values, but only the Salted SHA1 can be considered sufficiently safe. Table deduction USR02 The secure password hash is located in the fifth column of the pictured table deduction with the heading Password hash value. The corresponding data field in the column is called PWDSALTEDHASH. Weak Password Hash Risks You have a good and working permission concept that ensures that no processes or data can be manipulated or stolen. A potential attacker now has the ability to read out your database with the password hashes. The hash values are calculated using password crackers, which are available on the Internet at home, and the attacker now has a long list of user credentials. To damage your system, the user will now search for the appropriate permissions and perform the attack under a false identity. Identifying the actual attacker is virtually impossible. Check if your system is vulnerable too Your system generates the weak hash values if the login/password_downwards_compatibility profile parameter has an unequal value of 0.
Application layer: The application layer is the central component of the SAP ERP system and is therefore also referred to as the base system. All applications and calculations are executed here. The application layer communicates with both the database layer and the presentation layer. On the one hand, it requests data from the database layer, processes it and then passes it on to the presentation layer. On the other hand, data that is newly entered in the presentation layer is passed on to the database layer and stored there.
Some missing SAP basic functions in the standard are supplied by the PC application "Shortcut for SAP Systems".
Benefits 1) Hardly measurable Performance Impact 2) Central collection of data of all systems in the SAP Solution Manager's BW 3) No complex setup 4) Once activated, the collector and extractor jobs run regularly and without further manual activities Possible usage scenario If you have Solution Manager 7.2 in use, you can use UPL within the framework of "Custom Code Lifecycle Management" (in German: management of customer developments).
In the default scenario, the support packages in the queue are fully loaded.