Comments on: How To Reuse SSH Connection To Speed Up Remote Login Process

By: Dale Schaafsma

Dale Schaafsma — Wed, 02 Sep 2009 13:46:22 +0000

FYI, ssh manpages recommend storing the socket in a private location to prevent other users from using the same socket.
As for the cygwin error, my research so far indicates that this is due to passing around a file descriptor… https://bugzilla.mindrot.org/show_bug.cgi?id=1278

By: Tamas Herman

Tamas Herman — Fri, 17 Apr 2009 23:30:10 +0000

$ ssh -fNM eta
$ ssh eta ls
mm_receive_fd: no message header
muxserver_accept_control: failed to receive fd 0 from slave
ssh_msg_recv: read: header
muxclient: msg_recv

By: silvere

silvere — Sun, 15 Mar 2009 10:33:50 +0000

why doesn’t it works in my cygwin?

The error is:
$ ssh sunjingwei@relay01
ssh_msg_recv: read: header
muxclient: msg_recv

thank u very much.

By: hypatia

hypatia — Tue, 03 Feb 2009 12:21:24 +0000

The ONLY draw back I’ve found to this is that because all subsequent SSH requests to the same host share the TCP connection, doing a bulk SCP will slow down the responsiveness of the interactive sessions. It’s not a problem most of the time.

By: hilbert00

hilbert00 — Tue, 11 Nov 2008 07:21:39 +0000

I’m concerned about security. Is there any security issue using re-using ssh connections?

thanks

By: Robert de Bock

Robert de Bock — Thu, 21 Aug 2008 10:54:28 +0000

Wow, that is indeed a good trick! Never heard of these configuration variables.

Works on Mac OS X 10.5.4, the only remark;
- I have the options set for no host, so your ~/.ssh/config could just be like this:
ControlMaster auto ControlPath /tmp/ssh-%r@%h:%p
- The manpage suggests to use the variables with different capitalization. See example above.

Regards and thanks for the great trick, indeed fast!

Robert de Bock.