[plug] Remote machines

[Craig Ringer]

Sorry about replying to my own post again, last time promise...

Upon futher reflection PASV _can't_ work, as the _server_ decides what 
port the client is to connect to. You need to use PORT (where your 
client can decide what ports it wants the server to listen on) and along 
with the control channel also forward a pre-configured list of ports 
from the remote host back to your machine. The problem is still getting 
the client to use the desired ports though.

Think

ssh <stuff> -L1234:ftphost:21 -R1850:localhost:1850 -R 
1851:localhost:1851 <...> isp-ssh-server

then ncftp -P 1234 localhost

this is all do-able. What we need to be able to do is something like

ncftp -P 1234 -V 1850-1851 localhost

where "-V" says "use these local ports for PORT commands"

alas I can't find any references to any such option in ncftp manpage, 
.ncftp/firewall, other ftp client manpages, or a quick google search. 
Could be somewhat of a showstopper.

Anyway I'll wait for responses now, hope this has been at least remotely 
helpful.

-- 
Craig Ringer
GPG Key Fingerprint: AF1C ABFE 7E64 E9C8 FC27  C16E D3CE CDC0 0E93 380D
	-- if it ain't broke, add features 'till it is.