修改SSH默认端口,MySQL设置只能本机访问（Linux）

Host 'lu4n.com' resolved to 162.159.210.53. Connecting to 162.159.210.53:22... Connection established. To escape to local shell, press 'Ctrl+Alt+]'.   Last failed login: Tue Mar 28 22:06:54 CST 2017 from host-76-203.pool.hiperkom.hu on ssh:notty There were 1091 failed login attempts since the last successful login. Last login: Tue Mar 28 19:20:38 2017 from 223.150.114.189 [root@Luan ~]# cd /etc/ssh [root@Luan ssh]# ls moduli  ssh_config  ssh_host_ecdsa_key  ssh_host_ecdsa_key.pub  ssh_host_ed25519_key  ssh_host_ed25519_key.pub  ssh_host_rsa_key  ssh_host_rsa_key.pub  sshd_config [root@Luan ssh]# nano sshd_config    找到#Port 22,改成Port 2222   [root@Luan ssh]# service sshd restart Redirecting to /bin/systemctl restart  sshd.service [root@Luan ssh]# netstat -an Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address           Foreign Address         State       tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN    tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      tcp        0      0 0.0.0.0:1080            0.0.0.0:*               LISTEN      tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN    tcp        0    248 162.159.210.53:22       223.150.114.189:13844   ESTABLISHED tcp        0      0 162.159.210.53:22       108.171.107.245:43286   TIME_WAIT   tcp        0      0 162.159.210.53:22       108.171.107.245:43287   TIME_WAIT   tcp        0      0 162.159.210.53:1080     122.224.153.122:13064   ESTABLISHED tcp        0      0 162.159.210.53:1080     122.224.153.122:12909   ESTABLISHED tcp        0      0 162.159.210.53:1080     122.224.153.122:49067   ESTABLISHED tcp        0      0 162.159.210.53:1080     122.224.153.122:22977   ESTABLISHED [root@Luan ssh]# cd /etc/mysql -bash: cd: /etc/mysql: No such file or directory [root@Luan ssh]# cd /usr/local/mysql [root@Luan mysql]# ls COPYING  INSTALL-BINARY  README  bin  data  docs  include  lib  man  mysql-test  scripts  share  sql-bench  support-files  var [root@Luan mysql]# find / -name my.cnf /usr/local/mysql/mysql-test/suite/federated/my.cnf /usr/local/mysql/mysql-test/suite/rpl/my.cnf /etc/my.cnf [root@Luan mysql]# nano /etc/my.cnf   添加一行: bind-address  =  127.0.0.1   [root@Luan mysql]# service mysqld restart Redirecting to /bin/systemctl restart  mysqld.service Failed to restart mysqld.service: Unit not found. [root@Luan mysql]# service mysql restart Shutting down MySQL.. SUCCESS!  Starting MySQL.. SUCCESS!  [root@Luan mysql]# netstat -an Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address           Foreign Address         State       tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      tcp        0      0 0.0.0.0:1080            0.0.0.0:*               LISTEN      tcp        0      0 0.0.0.0:2222            0.0.0.0:*               LISTEN     tcp        0    248 162.159.210.53:22       223.150.114.189:13844   ESTABLISHED  tcp        0      1 162.159.210.53:80       223.150.114.189:15433   LAST_ACK    tcp        0      0 162.159.210.53:80       223.150.114.189:15431   ESTABLISHED tcp        0      0 162.159.210.53:80       223.150.114.189:15426   ESTABLISHED tcp        0      0 162.159.210.53:1080     122.224.153.122:49067   ESTABLISHED tcp        0      0 162.159.210.53:1080     122.224.153.122:13064   ESTABLISHED tcp        0      0 162.159.210.53:1080     122.224.153.122:12909   ESTABLISHED tcp        0      0 162.159.210.53:1080     122.224.153.122:22977   ESTABLISHED 
  [root@Luan mysql]# 
 

作者: Luan