With the very public hacks of some major vehicle brands in 2015, there is a renewed focus on vehicle security. There is a large range of vehicle electrical architectures, with significant regional variations, but there is an acceleration towards a domain orientated secure network. This presentation will look at the growing importance of the central gateway in a world of increased connectivity and security. As Ethernet becomes more prevalent, the topic of IP routing & firewall will be introduced and its role in adding another security layer. Finally, the role of the central gateway in enabling OTA software updated beyond the telematics unit, to the entire network will be presented.