通过本地电脑作为代理给远程服务器访问

可以通过本地电脑作为代理,帮助远程服务器访问外网。常见的方法是使用 SSH 隧道(SSH Tunnel)结合本地代理来实现。以下是一个实现思路:

操作步骤

以 7890 作为端口转发为例子

1. ssh -R 7890:localhost:7890 ubuntu@<hostname/ip>: 将远程服务器(<hostname/ip>)的 7890 端口,通过 SSH 隧道映射到本地机器的 7890 端口。这样,远程服务器上的任何发往端口 7890 的流量都会通过 SSH 隧道被转发到你本地机器的端口 7890

• -R 7890:localhost:7890: This is the option to set up a reverse tunnel. It tells SSH to forward the port on the remote server back to the local machine.
  • -R: The reverse tunnel option. It forwards a port from the remote server back to the local machine.
  • 7890:localhost:7890: This means:
    • Forward traffic from port 7890 on the remote server (<hostname/ip>).
    • To localhost:7890 on the local machine (i.e., localhost is the machine from which you're initiating the SSH connection).

2. 在 remote 端,使网络走端口 7890: export https_proxy=http://127.0.0.1:7890 http_proxy=http://127.0.0.1:7890 all_proxy=socks5://127.0.0.1:7890

至此,remote端走7890的端口请求都会被转发到本地的7890端口, 而本地7890端口就是VPN服务端口,从而实现网络翻墙

issue

远程服务器拒绝了连接

ssh -R 7890:localhost:7890 ubuntu@VM-4-9-ubuntu
kex_exchange_identification: Connection closed by remote host
Connection closed by 127.0.0.1 port 7890