SSH Secure Shell Client--- the host may be dow

?

the host may be down,or there may be a problem with the network connection.

Sometimes such problems can also be caused by a misconfigured firewall.

?

?

遇到这样的问题可能有这几个情况:

1、在安装centos的时候没安装ssh

2、sshd_config与ssh_config配置问题

3、IP问题

4、防火墙问题

一、安装CentOS ?SSH

yum install ssh

二、启动SSH

service sshd start

三、进入系统文件etc/ssh/sshd_config文件配置

1.vi /etc/ssh/sshd_config ? ?将PermitRootLogin的注释取消，或者将no改为yes。 ?

2.service sshd restart ?

3.setup命令进入将防火墙关闭。

四、进入系统文件 /etc/ssh/ssh_config文件配置

在终端下面输入：vi /etc/ssh/ssh_config?

#去掉Port 22前面的#号

Port 22

五、配置IP

ifconfig eth0 192.168.121.11

?

This error indicates that SSH Secure Shell for Workstations cannot establish a connection to the remote host computer. There are several reasons that might cause this situation.?

?

It may be that you have simply made a typing mistake, and there is an error in the name of the remote host computer. In this case you should also receive an error stating that the host is unknown.?

?

Check that you have defined the correct port number for the connection. The port can be changed on the Connection page of the Settings dialog.?

?

There may be problems with the configuration or physical setup of the network connection. Verify that other network connections are functioning.?

?

This problem may also arise if your local system is protected by a firewall and the firewall has not been properly configured. If you suspect that this is the case, ask your local system administrator to reconfigure the firewall.?

?

There may also be a temporary problem with the remote host computer. If this is the case, you should wait for a while and try to connect again later. Contact the administrator of the remote host computer for additional information.?

?

?

?

?

这个错误表示工作站的SSH安全Shell不能建立到远程主机电脑的连接。有几个原因可能导致这种情况。

?

这可能是因为你只是做了一个打字错误，有一个错误在远程主机的计算机名称。在这种情况下，你也应该会收到一个错误，说明该主机是未知。

?

检查是否已定义为连接正确的端口号。可以改变端口上的连接“页面设置”对话框。

?

有可能是与网络连接的配置或物理安装的问题。确认网络连接是否正常。

?

如果您的本地系统防火墙和防火墙没有正确配置的保护，这个问题也可能出现。如果怀疑是这种情况，请问您的本地系统管理员重新配置防火墙。

?

也有可能是一个与远程主机上的临时问题。如果是这样的话，你应该等待一段时间，并尝试再次连接后。更多信息，远程主机的计算机管理员联系。

?

?

?