Acceder à un linux en vnc via un tunnel SSH

man ssh a dit:

-L [bind_address:]port:host:hostport
Specifies that the given port on the local (client) host is to be forwarded to the given host and port on the remote side. This
works by allocating a socket to listen to port on the local side, optionally bound to the specified bind_address. Whenever a
connection is made to this port, the connection is forwarded over the secure channel, and a connection is made to host port
hostport from the remote machine. Port forwardings can also be specified in the configuration file. IPv6 addresses can be spec-
ified with an alternative syntax: [bind_address/]port/host/hostport or by enclosing the address in square brackets. Only the
superuser can forward privileged ports. By default, the local port is bound in accordance with the GatewayPorts setting. How-
ever, an explicit bind_address may be used to bind the connection to a specific address. The bind_address of ``localhost'' indi-
cates that the listening port be bound for local use only, while an empty address or `*' indicates that the port should be avail-
able from all interfaces.

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