Cisco ISR4221/K9 4000 series Integrated Service Router​ consolidates many must-have IT functions, including network, security, compute, storage, and unified communications. This not only simplifies day-to-day IT management, but it also means significant savings in capital, operational, and management expenses for lower total cost of ownership. The ISR4221-SEC/K9 has added security capabilities and licensing, such as zone-based firewall, IPsec VPN, EzVPN, Dynamic Multipoint VPN (DMVPN), and FlexVPN.