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Problem to detect infected files or AR attack if mount from Unix is used
Dear center /support
1.The usage capabilities of NFS are similar to those of shared folders.
Nevertheless, the QIBM_QPWFS_FILE_SERV exit point is not alerted by operations made in NFS.
This opens a security gap as our Anti-Ransomware is based on this exit point.QIBM_QPWFS_FILE_SERV exit point is not alerted by operations made in NFS.
The new QIBM_QP0L_OBJ_CLOSE and QIBM_QP0L_OBJ_OPEN are not sufficient as they do not show the operation. They are also not available
AFAIK for earlier releases.
We need a real time access to operation. Such is provided by Exit Programs.
Ransomware attacks IBM i. Without it, there is virtually no possibility to protect the IBM i.
This is a huge hole in the security of the IBM i and it should be addressed immediately.
2.Test that we did :
We mount AS/400 IFS directory (mount = using NFS server) from Unix:
AV Exit points QIBM_QP0L_SCAN_CLOSE and QIBM_QP0L_SCAN_OPEN are aware of reading and writing file in the mounted directory.
AV RT respond to Unix commands vi and cat.
There a little different between vi (read and save) and cat (only read):
vi : AV only writes line in the av.log of our AV product
cat: AV writes line in av.log, also file attribute’s “Scan status” changed to *SUCCESS
So the QIBM_QPWFS_FILE_SERV is not aware of the activities:
2.Explanation about NFS
NFS is one of the most widely used protocols for file servers. NFS implementations are available for most modern operating systems (OSes), including the following: Hewlett Packard Enterprise HP-UX. IBM AIX.
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