You could create this file: /etc/e-smith/templates-custom/etc/openvpn/host-to-net.conf/15tcp containing:
Unfortunately, I’m not sure which event needs to be run following this to re-build the host-to-net.conf file. I’m sure someone else will chime in on this. Or, in the meantime, you could just add that line to /etc/openvpn/host-to-net.conf and re-start the service. The above file will protect you against future updates re-building the file.
** Edit ** You will also have to open the firewall, as by default port 1194 is only opened to UDP.