I do this to connect between networks, especially for insecure protocols
such as RDP
[relay-in]
accept = myaddress:2222
connect=127.1.1.1:22222
client=yes
[relay-out]
accept=127.1.1.1:22222
connect=remoteaddress:1234
client=no
Here 127.1.1.1 can be any address in the 127.0.0.0/8 subnet. The port
for relay-in is arbitrary. I pick an arbitrary point greater than 1000
to connect relay-in to relay-out. The port for relay-out is whatever is
required by the application.
A single stunnel instance will support a number of such connections.
Carter
On 11/15/2017 7:36 AM, Peter Pentchev wrote:
On Wed, Nov 15, 2017 at 08:57:10AM -0300, Igor Gatis wrote:
It would be nice to know whether it is actually possible to achieve this
with stunnel. If not, is there any other tool I could use or combine?
It is possible to achieve this with stunnel running on server B with
two service definitions: one that runs in server mode, accepts a TLS
connection from server A, and forwards it to a local TCP port where
the second stunnel service definition runs in client mode and
establishes a TLS tunnel to server C.
I can try to come up with some configuration examples later; right now
I cannot really do any testing.
Best regards,
Peter
On Nov 13, 2017 08:58, "Igor Gatis" <[email protected]> wrote:
Yep, that's exactly what I'm seeking for help here.
If we can abstract the 2-way bit for a second, I'd call this a "certificate
transcription" TLS tunnel.
On Thu, Nov 9, 2017 at 5:19 PM, Vincent Deschenes <[email protected]>
wrote:
Ho,
But that does not account for the A ->[TLS] ->B part.
I believe that my sample will listen for unencrypted connection only.
*From:* stunnel-users [mailto:[email protected]] *On
Behalf Of *Vincent Deschenes
*Sent:* Thursday, 9 November 2017 3:16 PM
*To:* Igor Gatis <[email protected]>; [email protected]
*Subject:* Re: [stunnel-users] TLS "translation" & 2-way auth
You need to have a section in your config file which listen for requests
but also have the “client = yes” option with a cert and key like this:
[http_a_to_c]
client = yes
accept = port_number_to_listen_on_server_b
connect = server_c_address:443
cert = certificate.crt
key = private.key
cert and key are the certificate and private key server B uses to identify
itself on server C.
You could also add more options to specify a trustore to specify which
cert coming from server C server B will trust, otherwise server B will
simply allow the connection.
Good Luck
*From:* stunnel-users [mailto:[email protected]
<[email protected]>] *On Behalf Of *Igor Gatis
*Sent:* Thursday, 9 November 2017 1:14 PM
*To:* [email protected]
*Subject:* [stunnel-users] TLS "translation" & 2-way auth
Consider scenario below:
Server A ==TLS==> Server B ==TLS+2WayAuth==> Server C
Server A needs to connect to Server C through Server B which runs Stunnel.
Server C requires 2-way authentication. I have full control over Server A
and Server B and Server C belongs to a third-party.
What does Stunnel config should look like?
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