昨天不管电信的还是联通的网络，SSH无法连接，DNS设置为8.8.8.8还无法使用
Bitvise SSH Client打开报错如下：
10:26:01.635 Connection failed. Connect() failed: Windows error 10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
secureCRT连接
Connection timed out错误
ping的通，网站也能访问，就是SSH无法连接
开始还没有想到因自定义的端口号被封的因素，和linode客服联系，经客户提醒才发现可能是端口号被封的因素。
解决方法如下：
vi /etc/ssh/sshd_config
修改 Port 22
重启/etc/init.d/sshd restart