openssh-2.9p1 scp to ssh-2.4 fails

mouring at mouring at
Wed Jun 20 15:06:11 EST 2001

He must use sftp.  OpenSSH scp does not support sftp protocol, and SSH
Corp's v2 server ONLY implements sftp not traditional rcp-like scp.

- Ben

On Wed, 20 Jun 2001 J.S.Peatfield at wrote:

> Damn finger trouble... (must learn to cut/paste...)
> Am I missing something obvious or does the scp in openssh not
> interoperate with the scp in ssh-2.4?  I don't have any ssh-2.4
> systems but a user here trying to fetch a file from a site which uses
> it (and doesn't have scp1 gets):
> $ scp -o 'protocol 2' -v foobar at .
> Executing: program /usr/bin/ssh host, user foobar, command scp -v -f tf19.dat
> foobar at's password:
> scp: warning: Executing scp1 compatibility.
> scp: FATAL: Executing ssh1 in compatibility mode failed (Check that scp1
> is in your PATH).
> I assume that the scp warning is comming from the far end.  Turning up
> debugging shows that ssh protocol 2 is correctly being used, but for
> some reason the remote scp tries to run scp1 (which isn't there).
> Does ssh-2.4 use a different form of scp to that used by ssh1 and
> openssh?
> Is there an obvious fix (other than trying to get the remote site to
> update to openssh)?
> Is the scp protocol used in ssh-2.4 documented?  Could we add support
> for it in openssh?
>  -- Jon

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