openstack VNC安全问题
Log:Aug 23 15:03:15 localhost snmpd: Connection from UDP: :56915->
Aug 23 15:12:46 localhost /sbin/mingetty: tty1: invalid character 0x1b in login name
Aug 23 15:12:47 localhost init: tty (/dev/tty1) main process (5030) killed by TERM signal
Aug 23 15:12:47 localhost init: tty (/dev/tty2) main process (5032) killed by TERM signal
Aug 23 15:12:47 localhost monit: Shutting down monit HTTP server
Aug 23 15:12:47 localhost monit: monit HTTP server stopped
Aug 23 15:12:47 localhost monit: monit daemon with pid killed
Aug 23 15:12:47 localhost monit: 'vm-10-111-80-31' Monit stopped
Aug 23 15:12:47 localhost snmpd: Received TERM or STOP signal...shutting down...
Aug 23 15:12:48 localhost acpid: exiting
原因：
虚拟机通过VNC连接进行非法操作。
解决办法：
[*] 从交换和防火墙的ACL控制IP访问。
[*] 修改IPtables配置规则，屏蔽端口访问。
[*] 为vnc增加访问密码。
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