UNIX for Dummies Questions & Answers

Hello Community,

We have Installed a LDAP Directory behind a Firewall with redirectory port on an Ubuntu virtual machine. The virtual machine is installed on an Ubuntu physical server, that hosts many other virtual machine. All the virtual machine are only joinable from the intern network.
My Problem:
I want to connect on the virtual machine on a special port, were LDAP is installed. I do this:
First step: I connect me through ssh on the physical host
(ssh padressephysicalhost).
Second step: I try to open a tunnel on the virtual guest with following parameter:
Source port: 3391
Destination: 389
Ip Guest: 192.168.10.10
Which ssh parameter have I to use?

Thanks
Best regards

If I understand correctly:

Code:

ssh -L 3391:192.168.10.10:389 user@padressephysicalhost

Thanks you firstly for your answer.
You correctly understand, but I can connect through ssh on the Physical host (the root Server). Now, that I am on it, I want to open a tunnel on the Guest on the port 389.
I tried

Code:

ssh -L 3391:192.168.10.10:389

and here ist he result:

Code:

  usage: ssh [-1246AaCfgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
             [-D [bind_address:]port] [-e escape_char] [-F configfile]
             [-I pkcs11] [-i identity_file]
             [-L [bind_address:]port:host:hostport]
             [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]
             [-R [bind_address:]port:host:hostport] [-S ctl_path]
             [-W host:port] [-w local_tun[:remote_tun]]
             [user@]hostname [command]

Although the command and the parameters are right, I become this.
I don’t know what i have to do.

Thanks
Best regards

You must give these parameters when starting ssh. Thus, you need to still specify a host to connect to.

If you want to do so after the connection, you need to press [enter]~C to enter a mini command mode and type the same: -L 3391:192.168.10.10:389

I tried this too and I connect only on the root server.
And what's is the mini command mode, I don't know it.

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You -> Ubuntu Host -> LDAP server ?

You are connecting to the ubuntu host and giving the ldap server address in the -L command? Like this?

Code:

$ ssh -L 3391:ldap-server:389 ubuntu-host

Then on your own machine you can connect to localhost:3391 to access LDAP.