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Add restricted SSH admin shell

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This commit is contained in:
Eric Wendland 2026-05-21 01:49:48 +02:00
commit 59ccf6c748
9 changed files with 358 additions and 14 deletions
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8
docs/architecture.md
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@ -77,8 +77,12 @@ proxy <node-id>` command performs an authorized Iroh control-plane handshake:
the remote daemon validates the caller's signed peer card against the observed
Iroh EndpointID and requires `ssh_proxy.connect` on
`resource:ssh-proxy:local`. It returns connection metadata only. Carrying SSH
bytes over an Iroh stream and connecting to remote sshd or a restricted admin
shell remain future work, and will not make SSH a geth transport backend.
bytes over an Iroh stream is implemented on the dedicated `/geth/ssh-proxy/1`
ALPN and only connects to remote `127.0.0.1:22` after authorization.
`geth ssh admin-shell <node-id> <help|status|node-id>` is a separate restricted
geth admin workflow over the protected Iroh control path. It requires
`ssh_proxy.admin_shell` and executes only built-in geth commands, never host
shell commands. Neither path makes SSH a geth transport backend.
SSH certificate flows use the same split. Nodes can request new OpenSSH
certificates or renewals through geth metadata. A machine with the CA key or