1.新建用户wwweee000 [root@localhost ~]# useradd wwweee000 [root@localhost ~]# passwd wwweee000 Changing password for user wwweee000. New password: BAD PASSWORD: The password is a palindrome Retype new password: passwd: all authentication tokens updated s
一.修改ssh默认端口,防止暴力破解,让系统安全多一点点: i. 在配置文件/etc/ssh/sshd_config文件中修改 Port #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: ii. 然后重启sshd [root@localhost ~]# systemctl restart sshd iii. 如果自定义端口,重启sshd出现如下报错: [root@localhost ~]# systemctl restart
[grid@max1 ~]$ lsnrctl stop LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-NOV-2016 00:20:54 Copyright (c) 1991, 2011, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))TNS-01190: The user is not