Cisco 1841 Router CISCO1841-SEC/K9Cisco 1841 Router CISCO1841 SEC K9 Description: Cisco 1800 Series integrated services routers are the next evolution of the award winning Cisco 1700 Series modular access routers. The Cisco 1841 router (Figure 1) is designed for secure data connectivity and provides significant additional value compared to prior generations of Cisco 1700 Series routers by offering more than a fivefold performance increase and integrated hardware based encryption