A friend had an iMac at home that was backing up to a time capsule on his home network, this was all behind a BT home hub 5. He now has a new iMac, so has decided to move the old one into his shop, which is also using a BT home hub 5 (business edition). He would like to continue backup up the iMac in the shop to the time capsule at home, but we're having a few problems getting this to work, also he'd like to be able to remotely access the shop iMac from his home one. Here's what I've tried :- 1) Allocate the time capsule a static LAN address. 2) Configure port forwarding on the home BT HH5 to forward the following ports to the time capsule (using the apple support document https://support.apple.com/en-gb/HT202944) - 80, 443, 500, 548, 1900, 4488, 4500, 5223, 5350, 5351, 5353, 49152-65535 3) Added his iCloud account into the time capsule 'Back to my Mac' settings. 4) Allocate the shop iMac a static LAN address 5) Configure port forwarding on the shop BT HH5 to forward the following ports to the shop iMac - 80, 443, 500, 548, 1900, 4488, 4500, 5223, 5350, 5351, 5353, 49152-65535 6) Setup the shop iMac to use the same iCloud account 7) Setup the shop iMac to enable 'Screen Sharing' and 'Apple Remote Management' But the shop iMac cannot connect to the home time capsule and the home iMac cannot see the shop iMac. Has anybody else managed to do this whilst being behind the BT home hub 5 - am I missing something?