ssh: connect to host port 2200: Connection refused

当出现ssh: connect to host port 2200: Connection refused错误时，可能是以下原因导致的：

1. 端口号错误：请确认你使用的是正确的端口号。

2. 防火墙阻止了连接：请检查你的防火墙设置，确保允许SSH连接通过。

3. SSH服务未启动：请确保SSH服务已经启动。你可以通过以下命令检查SSH服务状态：

   sudo systemctl status ssh

如果SSH服务未运行，请使用以下命令启动它：

   sudo systemctl start ssh

4. SSH配置错误：请检查你的SSH配置文件，确保端口号和其他设置正确。

   sudo nano /etc/ssh/sshd_config

确认端口号是否正确，并确保以下设置：

   PermitRootLogin no
   PasswordAuthentication no

保存并退出文件后，重启SSH服务：

   sudo systemctl restart ssh

相关问题

ssh:connect to host port 22:connection refused lost connection

ssh: connect to host port 22: connection refused lost connection是由于ssh连接被拒绝而导致的连接丢失。这可能是由于以下原因之一导致的：

1.目标主机未启动ssh服务。
2.目标主机的防火墙阻止了ssh连接。
3.ssh服务配置错误。
4.网络连接问题。

为了解决这个问题，可以尝试以下几个步骤：

1.确保目标主机已启动ssh服务，并且端口22已打开。
2.检查目标主机的防火墙设置，确保允许ssh连接通过。
3.检查ssh服务的配置文件，确保正确配置。
4.检查网络连接是否正常，尝试使用其他设备连接目标主机。

ssh: connect to host port Connection refused

It seems like you are encountering an SSH connection issue with a specific port. There could be a few reasons for this error. Here are a few troubleshooting steps you can try:

1. Verify the SSH service: Make sure that the SSH service is running on the target host. You can check the status of the SSH service using the command `service ssh status` or `systemctl status ssh`.

2. Check the SSH port: Ensure that the SSH server is listening on the correct port. By default, SSH uses port 22. If you have changed the SSH port, make sure to specify it explicitly while connecting using the `-p` option, like `ssh -p <port> user@host`.

3. Firewall settings: Check if any firewall is blocking the SSH connection. If you have a firewall enabled, make sure to allow incoming connections on the SSH port.

4. Network connectivity: Ensure that there is no network connectivity issue between your machine and the target host. Try pinging the host to verify connectivity.

5. SSH configuration: If you have access to the SSH server's configuration file (/etc/ssh/sshd_config), make sure that it allows remote SSH connections and permits your user to connect.

Please note that these steps assume you have proper access rights and credentials to connect to the remote host. If you continue to face issues, it might be helpful to provide more details about your setup and any specific error messages you receive.