On Wed, Dec 11, 2013 at 8:28 PM, Yuri <yuri at rawbw.com> wrote: > I have a client host that I don't have access to now, which attempts to > establish ssh connection back to my BSD server using the private key. > Client runs this command: > /usr/bin/ssh -i ~/.ssh/my_key_rsa -o "ExitOnForwardFailure yes" -p $HPORT > $HUSER@$HOST -R $LPORT:localhost:$LPORT -N > > On the server debug log looks like this: > Connection from NNN.NNN.NNN.NNN port 43567 > debug1: HPN Disabled: 0, HPN Buffer Size: 65536 That's a modified ssh server. Can you reproduce the problem with a stock openssh from openssh.com? You might get some more clues if you run the server in debug mode (/path/to/sshd -ddde). -- Darren Tucker (dtucker at zip.com.au) GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 8FF4 FA69 Good judgement comes with experience. Unfortunately, the experience usually comes from bad judgement.