ssh session to a computer with a non-routable ip

[Matt Zagrabelny <mzagrabe@d.umn.edu>]

hello,

i am wondering if it is possible to get shell access to a computer with
a non-routable ip (192.168.x.x) if that computer initiates the ssh
session.

that is, there are two computers (A and B, with A having a non-routable
ip address and B having a routable ip address). i am at B and i want to
have shell access to A. there is a person at A who can type things and
run programs, but lets assume A's gateway wont do NAT or portforwarding.

any thougts?

thanks,

matt zagrabelny