Ensuring secure administration
AUTHORIZATIONS IN SAP SYSTEMS
For each area, the connection to other modules is the first priority. For example, for the Controlling division, the connection to the Finance division is first established by connecting the accounting area (FI) to the cost accounting area(s). The assignment of the cost accounting area to the result area is then an internal allocation within the controlling. If no allocations are found for certain valid organisational values, one of the two modules or the relevant functional area shall not be used for the organisational units of the enterprise.
The first line defines that access to all files is forbidden unless other settings have been made for them in the other lines. The asterisk (*) is in the first place here and in this case for all files and paths. If the asterisk is in a different position, it is interpreted as part of the file name, which is not allowed in Microsoft Windows, for example. In our example table, setting the switches FS_NOREAD = X and FS_NOWRITE = X for all paths prohibits reading and writing. This makes the table a white list. This is preferable to a black list for security reasons. SPTH, on the other hand, becomes a Black List if you remove the first line with PATH = * in our example or if you do not set any of the switches FS_NOREAD, FS_NOWRITE or FS_BRGRU. The second line with PATH = /tmp allows read and write access for all files starting with /tmp, similar to a permission value /tmp*, as an exception to the access ban defined in the first line for all files and paths. This setting is not limited to subdirectories, but includes, for example, all files whose name starts with /tmp-xy. The third line with PATH = /tmp/myfiles defines a permission group with FS_BRGRU = FILE, triggering the subsequent permission check on the S_PATH object. The SAVEFLAG = X switch defines that these files will be included in a backup procedure; however, this is not relevant for the permission award.
Assignment of critical authorizations and handling of critical users
SAPconnect uses the S/MIME (Secure/Multipurpose Internet Mail Extensions) standard for signing when sending emails or for verifying and decrypting received emails. S/MIME is supported by most email clients and requires X.509-based certificates.
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Evaluate the criticality of the security advisories for your company and also take into account the risks that may arise from the introduction of the SAP notes. This may include, for example, risks or expenses due to change and the corresponding tests in a productively used business process. Depending on this evaluation, you decide which safety instructions you want to insert directly and which hints should be implemented in the next maintenance cycle.
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The access type and the permission group stored in the SPTH table are checked.
You should, however, take a few things into account.