??????Щ??????????????????root????????????ssh????????????????
????1.???/etc/pam.d/login??????????????
????auth required pam_succeed_if.so user != root quiet
????2.???/etc/ssh/sshd_config???????
????#PermitRootLogin yes
????????
????PermitRootLogin no
????3.???????sshd????
????/etc/init.d/sshd restart
??????????????????????????????????????root???????????“su”?л???root?????????????sudo???????????Щroot????
???????????????????????????????????