 | The NetDefend family of Firewall/VPN Security Appliances is D-Link’s answer for hardware-based network security. The new DFL-1600 NetDefend Network Security Rackmount VPN Firewall is an easy-to-deploy VPN and firewall solution designed for enterprise and small-to-medium sized businesses that demand superior performance and security. Features: Stateful Packet Inspection (SPI), DoS Prevention, URL Filtering, ActiveX/ Script Blocking, NAT, Cookies Blocking Number of Reviews: 0 | Ratings:  | Best deal: $4160 $4160 - $4160 from 1 stores. |