I've used that sshnet trick many many times. I just wish it supported a newer version of ssh :-)
On Tue, Oct 12, 2010 at 7:53 AM, Steve Simon <st...@quintile.net> wrote: > the twitter example you gave is perhaps too simple, could the tweets > not just be text written to a publicly writable file. the users could > connect > with 9p but as the user none son they will need no auth. > > better examples of the everything is a file aproach are wikifs (a file > server which > prvides virtual files for the httpd server (or any normal 9p file client) > to access and stores a database of wiki pages. > http://plan9.bell-labs.com/magic/man2html/4/wikifs > > the cassic example is using a plan9 server as a gateway machine across a > firewall. > This machine is dual homed and all machines inside the firewall are > isolated. > when one of these machines wants to connect to somone outside the firewall > they > can just import the gateway's /net.alt over the top of their own. (by > tradition > the primary interface is mounted on /net and the seccondary at /net.alt) > > Now any DNS lookup and socket connection will be made using the gateway's > internet > facing NIC. This is all done using the 9p protocol, no clever IP routing > etc. > if the 9p connection to the hateway happens to come over an ssh session, > ppp, or pigeon, it doesn't matter, you are sharing files, and these > particular > files give you access to that machines network interface. > > there is also a really neat trick you can use do a similar thing with a > unix > machine as the gateway - sshnet provides a /net like interface to plan9 but > uses > ssh's remote port forwarding to speak to unix: > http://plan9.bell-labs.com/magic/man2html/1/ssh > > -Steve > >
