如何修改linux 的SSH的默认端口号?

在安装完毕linux,默认的情况下ssh是开放的,容易受到黑客攻击,简单,有效的操作之一就是修改默认端口号
如下列,我们把22修改我2501
就是修改/etc/ssh/sshd_config   //注意,容易和ssh_config相混合
步骤一
[[email protected] ssh]# more sshd_config
#       $OpenBSD: sshd_config,v 1.69 2004/05/23 23:59:53 dtucker Exp $
# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented.  Uncommented options change a
# default value.
#Port 22             //先把22注释掉
port 2501            //添加一个新的端口
#Protocol 2,1
步骤二
[[email protected] ~]# service sshd restart
Stopping sshd:[  OK  ]
Starting sshd:[  OK  ]
步骤三
用SecureCRT测试

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