Comments (4)
Does this problem occur when not using sshportal
?
(To clarify the purpose of asking, I'm wondering if it's possible this problem is related to something else, eg, that port already being bound by something)
from sshportal.
I can verify that sshportal
causes the failure in remote port forwarding. Connecting directly to the system allows remote port forwarding whereas connecting through sshportal
results in a failed forward.
from sshportal.
I have the same issue. Did you find the cause?
from sshportal.
I think I was able to trace this down into gliderlabs/ssh/server.go handleRequests(), there is no handler registered on the connection. By default we only register a ChannelHandler not a RequestHandler in server.go server() ssh.Server() (boy I learned a lot about ssh today).
func (srv *Server) handleRequests(ctx Context, in <-chan *gossh.Request) {
for req := range in {
handler := srv.RequestHandlers[req.Type]
if handler == nil {
fmt.Printf("USING DEFAULT HANDLER for %s\n", req.Type)
handler = srv.RequestHandlers["default"]
}
if handler == nil {
fmt.Printf("DEFAULT HANDLER EMPTY\n")
req.Reply(false, nil)
continue
}
/*reqCtx, cancel := context.WithCancel(ctx)
defer cancel() */
ret, payload := handler(ctx, srv, req)
req.Reply(ret, payload)
}
}
I get the following printout:
USING DEFAULT HANDLER for tcpip-forward
DEFAULT HANDLER EMPTY
"tcpip-forward" is the "global request" for remote port forwards (https://www.rfc-editor.org/rfc/rfc4254#section-7.1)
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