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