How to Access a NAS Drive from Outside my Home Network

On my Linksys router, the easiest thing to do is to punch through the firewall for the entire unit. They call this a DMZ host, located under the "Applications and Gaming" heading.  In this case, the particular host appears to the outside world to be located at the router's IP addres.  I have not used a DLink router for a while, but I think they had something similar. The downside of this is that it basically puts the host outside the router's firewall.

At any rate, after you manage to make the router transparent enough, you still need to be able to find the IP address that has been assigned by your Internet Service Provider, which unfortunatley can change occasionally. There is a Wikipedia article describing a solution for this - DDNS. My Linksys router actually said it came with a one-year subscription to the TZO DDNS service, but I never took advantage of this.

from the wikipedia page: "The ultimate result is that the traveller may communicate with his home at, say myname.ddnsservice.org instead of an unknown varying IP address;"

These guys offer a free version of their DDNS service "for personal use", but I have not personally used it. They also have a discussion about a D-Link router.

This is general information, sorry I can't help you with anything more specific to the NAS drive you have.  I assume Seagate will be able to tell you which are the exact ports that need to be forwarded?

I've requested that this question be deleted for the following reason:

Never was able to get a suitable answer.

What I wrote to you is exactly what you need to do!