ssh tunneling

[poma]

On 12.09.2013 08:50, Alchemist wrote:
> 2013/9/12 bruce <badouglas at gmail.com>
> 
>> Hi.
>>
>> Not sure if this is the right list, but I'm trying to figure out how
>> to allow an app running on an external machine to be setup to access a
>> "port"/app running on another machine through a ssh tunnel...
>>
>> machine A is the machine running an app located on port 4725
>> machine A is running sshd, and I can ssh into it
>>
>> machine B is the client machine, running a test app that wants to
>> connect to port 4725 via the foo app.
>> machine b can ssh into machine A by doing ssh fuser at 1.2.3.4 and giving
>> the password
>>
>> when foo runs on machine B, it's looking to connect to port 4725, so
>> I'm trying to figure out how to allow port 4725 from machine A to be
>> forwarded through to port 4725 in machine B...
>>
>> any pointers would be useful
>>
>> thanks
>>
> 
> ssh -lfuser -fnqNT -L ***1INT***:4725:***2INT***:4725 1.2.3.4
> 
> Where ***1INT*** is local bind IP, and ***2INT*** is remote IP, to forward.
> f.e
> 
> ssh -lfuser -fnqNT -L 127.0.0.1:4725:1.2.3.4:4725 1.2.3.4
> or
> ssh -lfuser -fnqNT -L 127.0.0.1:4725:127.0.0.1:4725 1.2.3.4
> 
> netstat -ntul | grep 4725
> tcp        0      0 127.0.0.1:4725          0.0.0.0:*               LISTEN
> 
> Now Local-to-Remote tunnel listens on your local interface port 4725
> 


man 1 ssh
 -L [bind_address:]port:host:hostport

man 5 ssh_config
 LocalForward [bind_address:]port host:hostport


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