Sify --->Router (NAT) at cable buy end /sify --->Router (With Private IP at
Office )--->Office PC (ubuntu )
How can I access my it , can reverse ssh tunneling work ?
One way is to setup teamviewer or similar on Office PC. Reverse SSH should
work too, but you would have to script it so that you can trigger connection
from Office PC. That is to initiate reverse SSH or to reestablish it is
connection goes down. One way could be to have a cron job monitor some URL /
mailbox and establish ssh tunnel on certain message.