Bonjour a tous, je souhaite creer un tunnel ssh pour me connecter sur un serveur distant. Le but est de creer une "passerelle" entre moi et un serveur.

La gateway doit etre installé sur la machine en local donc on doit pouvoir se connecter avec cette commande "ssh orion@127.0.0.1 -p 36" puis on doit pouvoir taper des commandes qui passe par la gateway

SSH connection established.

Port forwarding from localhost:36 to *.*.*.*:22 is established.

Command Result:

/home/orion

Visiblement la gateway se connecte correctement au serveur car la commande pwd affiche le bon résultat. Or impossible de se connecter sur la gateway.

ssh orion@127.0.0.1 -p 36

kex_exchange_identification: Connection closed by remote host

Connection closed by 127.0.0.1 port 36

Pour info j'ai désactivé mon pare feu

using System;
using Renci.SshNet;

class Program
{
    static void Main()
    {
        // Set SSH connection info
        string sshHost = "127.0.0.1";
        int sshPort = 36;
        string sshUsername = "orion";
        string sshPassword = "psw";

        string targetHost = "*.*.*.*";//ip du serveur
        int targetPort = 22;//port ssh du serveur

        using (var client = new SshClient(targetHost, targetPort, sshUsername, sshPassword))
        {
            try
            {
                client.Connect();
                Console.WriteLine("SSH connection established.");

                // Set up port forwarding
                var portForwarded = new ForwardedPortLocal("127.0.0.1", (uint)sshPort, targetHost, (uint)targetPort);
                client.AddForwardedPort(portForwarded);

                portForwarded.Start();

                Console.WriteLine($"Port forwarding from localhost:{sshPort} to {targetHost}:{targetPort} is established.");


                // Send the "pwd" command
                using (var cmd = client.CreateCommand("pwd"))
                {
                    var result = cmd.Execute();
                    Console.WriteLine($"Command Result:\n{result}");
                }

                // Keep the program running
                Console.WriteLine("Press 'Q' to quit.");
                while (Console.ReadKey().Key != ConsoleKey.Q)
                {
                    // Keep the program running until 'Q' is pressed
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error: {ex.Message}");
            }
            finally
            {
                client.Disconnect();
                Console.WriteLine("SSH connection closed.");
            }
        }
    }
}

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Edité par JEANBAPTISTECOMTE1 18 janvier 2024 à 18:47:35