iSCSI security considerations
The /etc/iscsi directory, the /etc/tmiscsi directory, and the files in those directories are protected from non-privileged users through file permission and ownership.
CHAP secrets are saved in the /etc/iscsi/targets file
and the /etc/tmiscsi/autosecrets file in clear text.
Note: Do not to change the original file permission and ownership of these
files.