What is the ssh_config equivalent to this syntax involving multiple at signs

Peter Moody mindrot at hda3.com
Thu Dec 28 05:25:57 AEDT 2017

> debug1: Authenticating to jumphost:22 as 'myuser at technicaluser@targethost'


so with multiple @'s, you're doing the equivalent of

 ssh jumphost -l "myuser at technicaluser@targethost"


it sounds like the jumphost has a funny sshd configuration that turns
"myuser at technicaluser@targethost" into something like, "username =
myuser + forcecommand ssh myuser at targethost"

maybe try something like

Match Host targethost
  User myuser at technicaluser@targethost
  Hostname jumphost

On Wed, Dec 27, 2017 at 10:09 AM,  <Garbage at gmx.de> wrote:
> My company uses a certain product which forces me to use a jumphost / ssh proxy.
> When connecting to a server I have to type "ssh myuser at technicaluser@targethost at jumphost" everytime. I tried to simplify this by editing my ssh_config and putting this into the file:
> Host targethost
>   ProxyJump technicaluser at jumphost
> These lines are recognized but don't work like intended because all that changes is that ssh now asks for the password of the technicaluser (for which I don't have a password due to security design).
> When I run the ssh command with the three at signs this works fine, all I'm prompted for is the password of myuser.
> I tried to find out more about the working solution but didn't even find a name for this. What is this syntax called and what would be the equivalent for ssh_config ?
> (I want to use ssh_config because I would prefer having to type less and having a setup that works for all other applications that make use of ssh too (git, ansible, ...)
> If you are interested in more details I have an open answer on Stack Exchange which contains log files (https://unix.stackexchange.com/questions/413285/hardwire-jump-host-in-ssh-config)
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