--- a/dbclient.1	Tue Mar 21 16:16:41 2006 +0000
+++ b/dbclient.1	Sun Sep 14 06:47:51 2008 +0000
@@ -29,24 +29,23 @@
 .I idfile
 (multiple allowed).
 .TP
-.B \-L \fIlocalport\fR:\fIremotehost\fR:\fIremoteport\fR
+.B \-L \fIlistenport\fR:\fIhost\fR:\fIport\fR
 Local port forwarding.
 Forward the port
-.I localport
-on the local host to port
-.I remoteport
-on the remote host
-.IR remotehost .
+.I listenport
+on the local host through the SSH connection to port
+.I port
+on the host
+.IR host .
 .TP
-.B \-R \fIlocalport\fR:\fIremotehost\fR:\fIremoteport\fR
+.B \-R \fIlistenport\fR:\fIhost\fR:\fIport\fR
 Remote port forwarding.
 Forward the port
-.I remoteport
-on the remote host
-.I remotehost
-to port
-.I localport
-on the local host.
+.I listenport
+on the remote host through the SSH connection to port
+.I port
+on the host
+.IR host .
 .TP
 .B \-l \fIuser
 Username.
@@ -60,10 +59,46 @@
 .B \-T
 Don't allocate a pty.
 .TP
+.B \-N
+Don't request a remote shell or run any commands. Any command arguments are ignored.
+.TP
+.B \-f
+Fork into the background after authentication. A command argument (or -N) is required.
+This is useful when using password authentication.
+.TP
 .B \-g
 Allow non-local hosts to connect to forwarded ports. Applies to -L and -R
 forwarded ports, though remote connections to -R forwarded ports may be limited
 by the ssh server.
+.TP
+.B \-y
+Always accept hostkeys if they are unknown. If a hostkey mismatch occurs the
+connection will abort as normal.
+.TP
+.B \-W \fIwindowsize
+Specify the per-channel receive window buffer size. Increasing this 
+may improve network performance at the expense of memory use. Use -h to see the
+default buffer size.
+.TP
+.B \-K \fItimeout_seconds
+Ensure that traffic is transmitted at a certain interval in seconds. This is
+useful for working around firewalls or routers that drop connections after
+a certain period of inactivity. The trade-off is that a session may be
+closed if there is a temporary lapse of network connectivity. A setting
+if 0 disables keepalives.
+.SH ENVIRONMENT
+.TP
+.B SSH_ASKPASS
+dbclient can use an external program to request a password from a user.
+SSH_ASKPASS should be set to the path of a program that will return a password
+on standard output. This program will only be used if either DISPLAY is set and
+standard input is not a TTY, or the environment variable SSH_ASKPASS_ALWAYS is
+set.
+.TP
+.B DROPBEAR_PASSWORD
+A password to use for remote authentication can be specified in the environment
+variable DROPBEAR_PASSWORD. Care should be taken that the password is not
+exposed to other users on a multi-user system, or stored in accessible files.
 .SH AUTHOR
 Matt Johnston ([email protected]).
 .br