Hi, for my client I have set up an mini sftp-Server (on Windows in their Intranet) and on my webserver (FreeBSD) there is a cronjob looking for new files to load them via sftp/ssh to the webserver.
Now we need to limit the bandwidth of the sftp-uploads (ADSL). For several reasons it would be better, if I could limit the traffic on the webserver side. I thought, I would configure pf with altq to limit the bandwidth of the ssh-client. ____________ ____________ Intranet | | Webserver sftpd ======> ssh-client (cron) limited | | pf / altq upload bw | | ____________| | ____________ Now the idea was to force the sftpd to use less bandwidth by limiting the bandwidth of the ssh-client (via pf). As I read on http://www.openbsd.org/faq/pf/queueing.html altq limits by dropping packets. So I am not sure if this would cause the sftpd to send less packets. I would even expect that the sftpd would send more packets to compensate the lost ones and therefor use even more bandwidth. Or is it part of the ssh protocol to agree on a lower bandwidth based on the number of lost packets? Perhaps there is a way for the ssh-client to tell the sftpd how much bandwith to use? Is there a way to solve this without QoS on the sftpd side? Regards, Benny
