> (and I don't mean only the options explicitly set on sshd_config, > the defaults might also be different).
Sadly this appears to be the case. Despite comparing sshd_config ages ago, I have identified a possible solution, adding: IPQoS lowdelay throughput to /etc/ssh/sshd_config on the OpenBSD box. This apparently reverts a defaults change made to OpenSSH some time ago. The reason Linux was not affected, despite having a nearly identical sshd_config: it turns out the Debian folks patch this default out of the upstream OpenSSH source when creating their distro-specific build, rather than making a change to their default sshd_config. While I'm sure this was well-intentioned, creating a situation where sshd_config != sshd_config on every system seems a bit insane to me, and makes debugging many times more difficult. Regards Lloyd