Juniper Networks J-series routers are ideal for branch offices connected directly to a traditional private network, such as leased lines, Frame Relay, ATM, or MPLS, or for branch offices where the public Internet is used as an alternative to a traditional private WAN. Because the J-series routers offer superior performance while running services such as stateful firewall, Network Address Translation (NAT), and IPSec, they are also ideally suited for Metro Ethernet deployments.The Juniper Networks J4350 is a modular router that supports Juniper Physical Interface Modules (PIMs), which provide a wide variety of common WAN and LAN interfaces, including Gigabit Ethernet.