[Cyberduck-trac] [Cyberduck] #2865: Support proxy connection with SSH Tunnel through bastion server

[Cyberduck]

#2865: Support proxy connection with SSH Tunnel through bastion server
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 Reporter:  ross.peoples@…                       |         Owner:  dkocher
     Type:  enhancement                          |        Status:  assigned
 Priority:  high                                 |     Milestone:  8.0
Component:  sftp                                 |       Version:  4.4.5
 Severity:  normal                               |    Resolution:
 Keywords:  ssh tunnel sftp gateway jump server  |  Architecture:  Intel
 Platform:                                       |
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Comment (by dkocher):

 We would intend to support the `ProxyJump` directive from the OpenSSH
 configuration.

  The main method is to use an SSH connection to forward the SSH protocol
 through one or more jump hosts, using the ProxyJump directive. Using the
 ProxyCommand option to invoke Netcat as the last in the chain is a
 variation of this for very old clients.

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Ticket URL: <https://trac.cyberduck.io/ticket/2865#comment:45>
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