can a firewall block out a external hard drive?

Help for v2
1 
                                                     Hi Everybody,

I have some detection issues with a Seagate freeagent desktop external HD. And I read on another forum that firewalls can sometimes block external drive via a 1394 port or USB port .
Is that possible ?

2

I have found that Windows based software firewalls can block just about anything. I had issues with my Drobo and the firewall software. It’s possible, but I suggest someone with a bit more tech knowledge confirm for sure for you…

Eddie.

3

If the 1394 or USB ports are being configured to run Internet Protocol, then CFP will consider those devices to be just another network adapter and block or accept traffic accordingly.