changing wtmp ownership and permission

Linux and Unix-Like Red Hat
1

Hi,

I am using redhat AS 3. Recently, I was asked to implement a security control on the OS: to change ownership of /var/log/wtmp to root:sys and permission to 600. However, when I made the change and reboot the machine, everything was reverted. How come? Please help.

The following is the original permission and ownership of the file:

-rw-rw-r-- 1 root utmp 29568 Oct 15 17:05 /var/log/wtmp

Thanks and Regards,
Kit

2

Not sure why sombody decided the permissions should be 600, but
the permissions on this file should be 664. More than root needs to
be able to write to this file.