Lost controller

[allsorts]

If I've got the right sort of box (Alan really needs to tell us the make and model of it). It's a box designed to connect devices associated on its WiFi hotspot LAN to the internet via a 4G mobile phone data link. In the broadest of terms it's a router and firewall, in that packets with destinations not in the LAN are routed out over the 4G link to the 'net. Firewall? Iit'll have NAT...