OpenSSH SSH client (remote login program)

-o option
        Can be used to give options in the format used in the configuration file.  This is useful for
        specifying options for which there is no separate command-line flag.  For full details of the
        options listed below, and their possible values, see ssh_config(5).

              AddressFamily
              BatchMode
              BindAddress
              ChallengeResponseAuthentication
              CheckHostIP
              Cipher
              Ciphers
              ClearAllForwardings
              Compression
              CompressionLevel
              ConnectionAttempts
              ConnectTimeout
              ControlMaster
              ControlPath
              DynamicForward
              EscapeChar
              ExitOnForwardFailure
              ForwardAgent
              ForwardX11
              ForwardX11Trusted
              GatewayPorts
              GlobalKnownHostsFile
              GSSAPIAuthentication
              GSSAPIDelegateCredentials
              HashKnownHosts
              Host
              HostbasedAuthentication
              HostKeyAlgorithms
              HostKeyAlias
              HostName
              IdentityFile
              IdentitiesOnly
              IPQoS
              KbdInteractiveDevices
              KexAlgorithms
              LocalCommand
              LocalForward
              LogLevel
              MACs
              NoHostAuthenticationForLocalhost
              NumberOfPasswordPrompts
              PasswordAuthentication
              PermitLocalCommand
              PKCS11Provider
              Port
              PreferredAuthentications
              Protocol
              ProxyCommand
              PubkeyAuthentication
              RekeyLimit
              RemoteForward
              RequestTTY
              RhostsRSAAuthentication
              RSAAuthentication
              SendEnv
              ServerAliveInterval
              ServerAliveCountMax
              StrictHostKeyChecking
              TCPKeepAlive
              Tunnel
              TunnelDevice
              UsePrivilegedPort
              User
              UserKnownHostsFile
              VerifyHostKeyDNS
              VisualHostKey
              XAuthLocation

-v      Verbose mode.  Causes ssh to print debugging messages about its progress.  This is helpful in
        debugging connection, authentication, and configuration problems.  Multiple -v options increase the
        verbosity.  The maximum is 3.

-N      Do not execute a remote command.  This is useful for just forwarding ports (protocol version 2
        only).

-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 specified 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.  However, an explicit bind_address may be used to bind the connection to a specific
        address.  The bind_address of “localhost” indicates that the listening port be bound for local use
        only, while an empty address or ‘*’ indicates that the port should be available from all
        interfaces.

ssh connects and logs into the specified hostname (with optional user name).  The user must prove his/her
identity to the remote machine using one of several methods depending on the protocol version used (see
below).

If command is specified, it is executed on the remote host instead of a login shell.