UDP ports 161 and 162 should allow you to connect from eManager to the CIX system. TCP ports 20 and 21 are for FTP. This would allow you to access the SD card, but you should be able to connect to the processor without those 2 FTP ports.

I have a few systems setup like with port forwarding. To add additional security I configured the router to only allow a connection from my office IP address.

I would check to make sure you have the gateway setup in the Toshiba CIX.