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From "Goldstein Lyor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SSHD-792) Remote Port-Forwarding uses invalid "original host" values
Date Mon, 26 Feb 2018 10:23:00 GMT

    [ https://issues.apache.org/jira/browse/SSHD-792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16376628#comment-16376628
] 

Goldstein Lyor commented on SSHD-792:
-------------------------------------

See [SSH port forwarding example|https://www.ssh.com/ssh/tunneling/example] for better explanation
of various parameters on {{ssh -L or -R}} client command

> Remote Port-Forwarding uses invalid "original host" values
> ----------------------------------------------------------
>
>                 Key: SSHD-792
>                 URL: https://issues.apache.org/jira/browse/SSHD-792
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 1.6.0
>         Environment: Java 8
> OSX
>            Reporter: Andreas Haufler
>            Assignee: Goldstein Lyor
>            Priority: Major
>         Attachments: Forwarder.java
>
>
> When starting a server which accepts all kinds of port forwarding:
> sshd.setTcpipForwardingFilter(new StaticDecisionForwardingFilter(true));
> remote port-forwarding doesn't work (at least when connecting from OSX) unless a specific
address is given:
> ssh localhost -p 2222 -R10001:localhost:80 <- doesn't work
> ssh localhost -p 2222 -R127.0.0.1:10001:localhost:80 <- does work
> As far as I can tell, TcpipClientChannel.java:98 uses the underlying socket-address
> of the effective connection and transmit the host (which is either 127.0.0.1 or ::1)
on OSX.
> However, the client (ssh) would want to see "localhost" as original host in order to
permit tunneling.
> Is there anything I am missing? Otherwise I could provide a PR which fixes this (by remembering
the originally requested host and reporting that back).



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