Having modssl run on different ports, is this even possible?

I am running Apache2 with the included mod_ssl module, I figure this a good
place to start, but if it belongs on the apache httpd mailing list you can
bluntly tell me.

The servers I administer run in an environment that is pretty painful, but
common i hear. Another team at corporate headquarters administer the
firewall and what they are planning to do is as follows. I have no control
over the firewall what so ever.

Any port 80 (http) request sent to the firewall for domain
www.example.comwill be then rerouted to an internal IP, such as
172.16.15.102 (behind the firewall), on port 8000. Thus I have apache
listening on port 8000.

Any port 443 (https) request sent to the firewall for domain
www.example.comwill be then rerouted to to an internal IP, such as
172.16.15.102 (behind the firewall), on port 9000. I want to have mod_ssl
listening on port 9000, is this possible?

Should a virtualhost entry just work such <VirtualHost 172.16.15.102:9000>
and have the usual items such as SSLEngine, SSLCertificateFile,
SSLCertificateKeyFile, etc?

Any help is appreciated.

Yvo