ssh tunneling and "channel 2: open failed: administratively prohibited: open failed"

[Jonathan Underwood]

On 23/01/07, Rick Sewill <rsewill at cableone.net> wrote:
> > ssh  -R 8888:C:22 username at B cat -
> >
>
> My first guess was to suggest using
> ssh -N -L 8888:C:22 username at B
>
> I believe -L 8888 forwards port 8888 on Machine A through ssh to machine
> C, port 22.

Ah, yes, sorry, that's exactly what I did do (I thinko'd -R instead of
-L in my description). I've just repeated these test using -L, and get
the error message in the subject.


>
> I assume /etc/ssh/sshd_config, on Machine B, has not been changed from
> the default of allowing TCP Forwarding (AllowTCPForwarding)
>

Unfortunately I can't access /etc/ssh/sshd_config on that machine (B)
as I don't have route access. uname -ar on that machine gives SunOS
xxx.xx.xx.xxx.  5.10 Generic_118833-17 sun4u sparc SUNW,Sun-Fire-V440.
ssh -V gives Sun_SSH_1.1, SSH protocols 1.5/2.0, OpenSSL. I don't know
any way of checking if TCP forwarding is allowed on that machine.