Remote Host Identification Has Changed

Kmrn pas lg iseng main2 dari server router ke server proxy Linux via ssh nemu ky gini nih:
[root@router ~]$ ssh bos@192.168.1.2
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff
Please contact your system administrator.
Add correct host key in /home/root/.ssh/known_hosts to get rid of this message.
Offending key in /home/root/.ssh/known_hosts:3
Password authentication is disabled to avoid man-in-the-middle attacks.
Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.
X11 forwarding is disabled to avoid man-in-the-middle attacks.
Permission denied (publickey,password).
[root@router ~]$

Mengatur Tanggal/Waktu dari SSH

Tanya: Bagaimana saya dapat mengatur sistem tanggal dan waktu dari command prompt (shell) tanpa harus melalui GUI/Bios?
Jawab: Gunakan tanggal perintah untuk menampilkan tanggal dan waktu atau mengatur sistem tanggal / waktu lebih dari sesi ssh.