Meet the Vault: a small form factor PC that can be used as a firewall to protect your network. It has an Intel Celeron J3160 CPU and supports AES-NI for encryption. This tiny PC has 4 Gigabit Ethernet ports, USB 3.0 & HDMI ports, and fanless operation.
You can use this mini PC with open source software. The unit can accommodate up to 8 GB of RAM and 1TB of mSATA storage.