From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <9553e1bc09b92fde0bc2a8f650742c9c@quintile.net>
From: "Steve Simon" <steve@quintile.net>
Date: Tue, 10 Dec 2013 15:06:38 +0000
To: 9fans@9fans.net
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Subject: [9fans] punching through firewalls...
Topicbox-Message-UUID: 95fb9d40-ead8-11e9-9d60-3106f5b1d025

Hi,

In order to get remote access through a firewall I
currently have a script which I run on the inside
of the firewall which posts a file descriptor I
can mount from home.

while(~ true true){
	cpu -h home -c 'rm -f /srv/work ; srvfs work /mnt/term ; while() sleep 600 '>[2] /dev/null
	sleep 10
}

so at home I just:

	mount /srv/work /n/work
	bind /n/work/net /net.alt

This works but the performance is not great espicially
if I cpu into the work machine from home:

	cpu -u /net.alt/tcp!work

I assume the lack of zip is due to the multiple 9p round
trips necessary to establish the connection.

Is there a more elegant, and hopefully more performant way of
do this using import -B?

failing that any other techniques?

sadly ssh -R isn't very useful on plan9 (I think).

-Steve