Cisco 1800 Series Integrated Services Router (1811) No Flash Card - Tested | eBay
Cisco RV215W Wireless-N VPN Router Data Sheet - Cisco
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide - Configuring a VPN Using Easy VPN and an IPSec Tunnel [Cisco 1800 Series Integrated Services Routers] - Cisco