I need a specific PAM configuration for my sftpd service, so i copied the sshd executable and renamed it sftpd.
Then i set up a specific configuration in /etc/pam.d/sftpd to authenticate the users against LDAP, while the regular users are authenticated as usual.
Everything is fine, but the problem is, the "new" sftpd daemon, configured and launched as a systemd service on RedHat EL 7.4, don't trace actions (opendir, chdir, and so on).
The configuration is the same as the regular sshd, in particular this line :
Subsystem sftp internal-sftp -l VERBOSE
But nothing comes in auth.log.
Is there some curious side effect i should be aware of if the sshd daemon runs under a different name ?
Thanks in advance for any help