Date: Mon, 22 Mar 2010 08:55:36 +0200 From: Andrei Kolu <antik@bsd.ee> To: freebsd-questions@freebsd.org Subject: Re: sftp server with speed throttling Message-ID: <10263ac1003212355v358f70edx665353fd556a0fa4@mail.gmail.com> In-Reply-To: <cf9b1ee01003210653l668377b7lc9002ebc68ff063d@mail.gmail.com> References: <cf9b1ee01003210653l668377b7lc9002ebc68ff063d@mail.gmail.com>
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2010/3/21 Dan Naumov <dan.naumov@gmail.com>: > What are my options if I want to run an sftp server with speed > throttling? My understanding is that openssh (which includes sftp) in > base does not support this directly, so I would have to either use a > custom kernel with ALTQ (and I would really rather stick to GENERIC so > I can use freebsd-update) which sounds like a bit too much > configuration work or pass sftp traffic through PF and throttle it > (ugly, would also affect ssh traffic). > > Are there any sftp servers with directly built-in functionality for > this? I just would to be able to set limits for upload speed globally > for the entire server and preferably to also be able to do speed > settings on a per-user basis. > > Only OpenSSH alternative I use sometimes is http://www.freebsd.org/cgi/url.cgi?ports/security/ssh2-nox11/../ssh2/pkg-de= scr security/ssh2-nox11 Not about throttling but about chrooting: ---------------------------------------------------------------------------= ---- Date: Tue, 20 Aug 2002 08:35:46 +0930 To: Philip Paeps <philip@paeps.cx> From: Wincent Colaiuta <wincentcolaiuta@mac.com> El Thursday, 15 August, 2002, a las 11:13 PM, Philip Paeps escribi=F3: > I'm in the process of setting up a form of fileserver, and I'd like for > my > users to be able to work only in their home directories, not anywhere > else. I > would like to use SSH for the connections, as opposed to FTP, but I > don't want > users to be able to log into an interactive shell (only SCP/SFTP) and I > don't > want them to 'escape' out of their home directories. Use ssh2 from the ports collection: cd /usr/ports/security/ssh2 && make install In /usr/local/etc/ssh2/sshd2_config set the ChRootGroups and ChRootUsers directives to chroot the group(s) and/or user(s) that are to have ChRooted access. Turn off the default ssh (OpenSSH) by setting in /etc/rc.conf: sshd_enable=3D"NO" Start the new ssh: /usr/local/etc/rc.d/sshd.sh start When you create the user's account, make sure the shell is set to /bin/nologin or something similar. With this setup, they can sftp in and are chroot to the home dir, and they can't get a shell when they connect via ssh. In my opinion, OpenSSH should have this feature. We are told not to use ftp because of clear-text passwords, so we have to use ssh/sftp, but when we do that we can no longer chroot people to their home dirs! And if we're not careful, we end up giving them a login shell. Using ssh2 from the ports gets around this limitation, but just check the licence before you install to make sure that you qualify (otherwise it's not free). Cheers :-) Wincent ---------------------------------------------------------------------------= ----
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