![]() ![]() You can find more details on these commands in the SSH client configuration man page. You can also specify port forwarding if you use local ports on the remote host debug as well. I'm trying to utilize ssh's jump host option but for some reason it does not work, I get: ssh -J user1host1 user2target kexexchangeidentification: banner line contains invalid characters banner exchange: Connection to UNKNOWN port 65535: invalid format ssh -J user1host1:22 user2target:22 channel 0: open failed: connect failed: Name. The -W argument tells SSH it can forward stdin and stdout through the host and port, effectively allowing Ansible to manage the node behind the bastion/jump server. For example, instead of jump-host you can name it work-machine and change it’s hostname anytime you need to switch remote machines without having to modify any of VS Code settings. This sets up an SSH proxy through on port 2222 (if using the default port, 22, you can drop the port argument). I like this way because it moves the details of connections, host names etc away from VS Code and make them independently configurable. We have to specify that client what is our hosts, where to jump from etc. See the OpenSSH Cookbook for more information. You just need: ProxyJump bastion so that it uses the default username for your bastion entry. The reason we need to configure the jump host this way is because VS Code, practically so, delegates the connection responsibilities to the underlying ssh client. 1 Answer Sorted by: 2 The r part of your ProxyJump entry is being substituted for the username of the remote machine you are currently trying to ssh into ( core ). Feel free to continue reading for further insights and discussion. ![]() It should first connect to the jump host and from there reach the remote host you desire. ![]() Now in VS Code, using the remote SSH extension, you just need to say ssh remote-host (no need for the full domain name either since we specified it).
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