The DFL-CPG310 is a small footprint offering in the Unified Threat Management (UTM) market from D-Link. At just 8" long, 5" wide, and a little over 1" high, it's pretty compact. Even its wireless antennas seem small, measuring just 3".
As with other UTM devices, small size does not imply few features. D-Link's DFL-CPG310 is an option-filled network control product providing Firewall functionality, Client and Site-to-Site VPN connectivity, Antivirus Protection, Intrusion Detection and Protection (IDS/IPS), Web Filtering, and Network Reporting, all in addition to being a multi-WAN gateway router, wireless access point, and USB print server.