The Nortel VPN Router 1750 serves several roles in enterprise and carrier IP networks: basic IP access router, dedicated VPN switch, or firewall and can evolve from one to another through a simple license key. Supporting up to 500 VPN tunnels, the VPN Router 1750 is ideal for office centers, campuses, or large branch offices with several hundred users. With four expansion slots, the VPN Router 1750 can support range of LAN, WAN and acceleration cards for fan-out and back-up purposes, giving maximum expansion flexibility at an attractive entry price