Any ideas how to do all above? I've disabled LOG_OK_LOGINS and SYSLOG_SU_ENAB in login.defs, but still don't know how to do everything else.
According to man wtmp, you cannot disable utmp on Linux:
About the sshd ip logging, you can comment the line begin with
and restart the syslog daemon:
PS: Could you please tell us the reason you want to do that?