i want disable cat /etc/passwd to all user
only root can cat /etc/passwd

Unneeded with shadow passwords.

i was
chown root /etc/passwd
but all user group can cat /etc/passwd

That is correct and desired behavior. Also, your understanding of chown may not be correct; /etc/passwd is normally owned by root.

Hello,

This will help you

#chmod 700 /etc/passwd

#chown root:root /etc/passwd

chmod 700 /etc/passwd

can not login cpanel :2082

Why do you want to hide it from other users? An external authentication might work, but then you have the home directories and the list of processes in ps with the usernames.

getting a error cannot find the name but it login into the console with that error & also disable the listing
[root@dk]# chmod 600 /etc/passwd
[root@dk]# su - test
id: cannot find name for user ID 501
id: cannot find name for user ID 501
[I have no name!@dk ~]$ cat /etc/passwd
cat: /etc/passwd: Permission denied
[I have no name!@dk ~]$

[root@dk]# chmod 744 /etc/passwd
[root@dk]# su - test
[test@dk~]$

in other directory that work's

[root@dk ~]# chmod 600 /dump
[root@dk ~]# su - test
[test@dk ~]$ cd /dump/
-bash: cd: /dump/: Permission denied
[test@dk ~]$ cat /dump/passwd
cat: /dump/passwd: Permission denied
[test@dk ~]$ exit
logout

/etc/passwd file have -rw-r--r-- read & write for owner which is root for group & other read-only
so when we login in any user that get's information from /etc/passwd so i think it required at lest read permission. /etc/passwd