Apple Time Capsule Custom Firmware |top| Review
While there is no "DD-WRT for AirPort" that you can install in five minutes, the world of Apple Time Capsule custom firmware is thriving for those willing to pick up a soldering iron or a serial cable. It transforms a piece of "vintage" Apple tech into a modern, versatile networking powerhouse.
This gives you a full Linux server with working 5GHz Wi-Fi (using the proprietary broadcom-sta driver). You can then install: apple time capsule custom firmware
It uses the AirPyrt tools to enable hidden SSH access on the device. While there is no "DD-WRT for AirPort" that