General feasibility question - Home Security Hub

Is an Arduino a good option to build a home security 'hub' which would receive real-time sensor data (from 3rd party motion detectors etc) and export them (in near real-time) via TCP-IP?

Any initial thoughts appreciated!

Jim

FYI I'm anticipating using ZigBee based sensors and so far the research I've done points towards the BeagleBone being a more suitable platform.

Something like this BeagleBoard.org - Zigbee Home Automation Gateway

Is this right, or is an Arduino still a good fit?