D'après la fiche technique (en anglais) il fait bien firewall, NAT et VPN.
http://www.smc.com/files/AG/DS_SMC [...] asheet.pdf
The Barricade is an ideal all-in-one networking solution for home
and small business users. This platform independent multi-functional
broadband router combines a 4-port 10/100Mbps dual speed switch,
a built-in print server, an RS232 COM port for automatic fail-over
dial-up or modem connections, and firewall capability for security
against hackers and other unauthorised users.
The Barricade provides a WAN port as well as a Network Address
Translation (NAT), which translates your WAP IP address into private
LAN IP addresses keeping your internal network hidden from the
rest of the Internet. Barricade fully supports VPN tunneling via L2TP,
PPTP and IPSec pass-through allowing remote users secure access
to their corporate infrastructure. Also, a feature known as Hacker
Attack Logging has been implemented which detects, logs and
reports any potential hacker attacks to your network.