plink *remoteHost* -p *remotePort* -v sftp-server
plink *remoteHost* -p *remotePort* -v /usr/lib/sftp-server

##</code><code>##

my $sftp = Net::SFTP::Foreign->new(open2_cmd => "plink $host -p $port /usr/lib/sftp-server");
$sftp->error and die "SFTP connection failed: " . $sftp->error;

##</code><code>##

Subsystem  sftp  internal-sftp