SAP Basis is structured in the form of a three-layer model and consists of the following components:
BDLS Conversion of logical system names
Practical experience at home and abroad has given us a proven view of heterogeneous system landscapes. This flows into our consulting as a further plus point and creates not only smooth functionality but also cost efficiency of your individual system landscape.
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.
SAP Solution Manager
There are the following reasons that may lead to the termination of this step: TP_INTERFACE_FAILURE: Unable to call tp interface. TP_FAILURE: The tp programme could not be run. For more information, see the SLOG or ALOG log file. COMMAND_FILE_IMPORT_FAILURE: Unable to import the Object List to one or more Support Packages. The protocol of the Commandfile import contains the cause of the error. OBJECTS_LOCKED_? This step checks to see if there are any objects left in unreleased jobs that will be overwritten during the commit.
The "Shortcut for SAP Systems" tool is ideal for doing many tasks in the SAP basis more easily and quickly.
On "www.sap-corner.de" you will also find useful information about SAP basis.
This can be an internal administrator, or can be handed over to external service providers.