Bug 26330

Summary:	Remote port forwarding seems broken
Product:	[Retired] Red Hat Linux	Reporter:	Need Real Name <mal>
Component:	openssh	Assignee:	Nalin Dahyabhai <nalin>
Status:	CLOSED RAWHIDE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	pekkas
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2001-02-07 07:14:58 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Need Real Name 2001-02-06 17:42:54 UTC

The remote port forwarding (-R option) in ssh seems broken in 
openssh-2.3.0p1-4
The local port forwarding (-L options) works OK.

Comment 1 Need Real Name 2001-02-06 17:57:23 UTC

The command
ssh -R 6004:localhost:22 user.com
does dorward 6004 port on remote machine to port 22 on client machine
on
SSH-2.0-2.0.13 (non-commercial SSH 2.0.13)
and does not do any forwarding on
SSH-1.99-OpenSSH_2.3.0p1 (openssh-2.3.0p1-4)

Comment 2 Pekka Savola 2001-02-07 01:10:48 UTC

Did you use Protocol 2 (the default)?

Please note that _remote_ port forwarding for SSHv2 doens't work in 2.3.0p1.

This has been fixed in CVS 2.5 months ago, but no new SSH versions have been 
released yet.

Comment 3 Need Real Name 2001-02-07 01:28:30 UTC

Yes, I am using SSH2 protocol.
I will try CVS snapshot when I have time.

Comment 4 Need Real Name 2001-02-07 02:33:34 UTC

Seems I can not get CVS snapshot,
because it asks for a login/password to access.

Is there a way to extract this fix from CVS snapshot?

Or, another question: whether older openssh versions 
have remote forwarding working?

Comment 5 Need Real Name 2001-02-07 02:53:00 UTC

2.1.1p4-1.i386.rpm does not work withy remote 
port forwarding either.

Comment 6 Pekka Savola 2001-02-07 07:14:54 UTC

CVS uses 'anoncvs' or 'anonymous' pass I recall.

Snapshots can be obtained from http://www.mindrot.org/misc/openssh/

Some other stuff has changed too, so ripping the patch out and inserting it to 2.3.0p1 
might be problematic.

Comment 7 Pekka Savola 2001-02-24 08:15:33 UTC

2.5.1p1, where problems like these should have been fixed, is (will be) in rawhide.