@@ -79,7 +79,12 @@ X11 connections, arbitrary TCP ports and
7979sockets can also be forwarded over the secure channel.
8080.Nm
8181is binary compatible with the more well known OpenSSH and uses the same configuration
82- directives, methods, and keywords except where noted.
82+ directives, methods, and keywords except where noted with the exception of the default port.
83+ HPN-SSH servers, by default, use port 2222 for connection, and as such,
84+ .Nm
85+ clients
86+ attempt to connect on that port. If the connection attempt on port 2222 fails it will fallback to
87+ port 22. Please see the -p switch for more information.
8388.Pp
8489.Nm
8590connects and logs into the specified
@@ -531,6 +536,7 @@ For full details of the options listed below, and their possible values, see
531536.It EnableEscapeCommandline
532537.It EscapeChar
533538.It ExitOnForwardFailure
539+ .It FallbackPort
534540.It FingerprintHash
535541.It ForkAfterAuthentication
536542.It ForwardAgent
@@ -607,7 +613,7 @@ For full details of the options listed below, and their possible values, see
607613.It VisualHostKey
608614.It XAuthLocation
609615.Pp
610- .It * Hpnssh specific configuration option.
616+ .It * Hpnssh specific configuration option.
611617.El
612618.Pp
613619.It Fl P Ar tag
@@ -624,6 +630,13 @@ for more information.
624630Port to connect to on the remote host.
625631This can be specified on a
626632per-host basis in the configuration file.
633+ HPN-SSH uses a default port of 2222. It will automatically
634+ fallback to use the SSH standard port 22 if it cannot connect
635+ on port 2222. This fallback behaviour can be modified with the
636+ FallbackPort option. Note: if outbound port 2222 is
637+ blocked it may appear that the hpnssh client is non-responsive. In that event,
638+ either specify the correct port or use the ConnectTimeout option
639+ to trigger the port fallback more quickly.
627640.Pp
628641.It Fl Q Ar query_option
629642Queries for the algorithms supported by one of the following features:
@@ -1813,4 +1826,4 @@ protocol versions 1.5 and 2.0.
18131826Chris Rapier, Michael Stevens, Ben Bennet, and Mike Tasota developed
18141827the HPN extensions at the Pittsburgh Supercomuting Center with grants
18151828from Cisco, the National Library of Medicine, and the National Science
1816- Foundation.
1829+ Foundation.
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