Refuse client connecting to server if it uses old (pre-4.1.1) protocol. (Defaults to on; use --skip-secure-auth to disable.)
myql ¹öÀüÂ÷ÀÌ·Î ÄֿܼܺÎÁ¢¼Ó pre-4.1.1 ¿¡·¯¹ß»ý½Ã ÇØ´ç ¿É¼Ç»ç¿ë "--skip-secure-auth" or "--secure-auth"
mysql -u root -p -h Á¢¼ÓÇÒip -P Æ÷Æ® --skip-secure-auth
mysql -u root -p -h Á¢¼ÓÇÒip -P Æ÷Æ® --secure-auth