Hi,

   +-From: y...@jcraft.com (Atsuhiko Yamanaka) --
   |_Date: Thu, 4 Jun 2009 10:36:11 +0900 _______
   |
   |I don't know about "SOCKS-based dynamic port forwarding".
   |Is there a formal documentation, which describes what it is?

OpenSSH's 'man ssh' says as follows,

     -D [bind_address:]port
             Specifies a local "dynamic" application-level port forwarding.
             This works by allocating a socket to listen to port on the local
             side, optionally bound to the specified bind_address.  Whenever a
             connection is made to this port, the connection is forwarded over
             the secure channel, and the application protocol is then used to
             determine where to connect to from the remote machine.  Currently
             the SOCKS4 and SOCKS5 protocols are supported, and ssh will act
             as a SOCKS server.  Only root can forward privileged ports.
             Dynamic port forwardings can also be specified in the configura-
             tion file.

It is not so formal description, but it will be enough to understand
what it is and how should be implemented.  I guess it will not be
so difficult to support such a functionality.  If I have an opportunity,
I will in the future.


Sincerely,
--
Atsuhiko Yamanaka
JCraft,Inc.
1-14-20 HONCHO AOBA-KU,
SENDAI, MIYAGI 980-0014 Japan.
Tel +81-22-723-2150
    +1-415-578-3454
Skype callto://jcraft/

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