刚刚建立的服务器就有人试探

Sep 18 03:26:53 qr sshd[6134]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=179.180.221.216  user=root
Sep 18 03:26:55 qr sshd[6134]: Failed password for root from 179.180.221.216 port 37020 ssh2
Sep 18 09:00:59 qr sshd[6361]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.241.137.241  user=root
Sep 18 09:01:01 qr sshd[6361]: Failed password for root from 122.241.137.241 port 49439 ssh2