Before You Begin

Before you begin configuring IPSec, you must have completed these tasks:

• Establish basic connectivity. See the Getting Started Guide for your router.
• Configure network interfaces. See the J-series Services Router Basic LAN and WAN Access Configuration Guide.
• Configure one or more routing protocols. See the J-series Services Router Basic LAN and WAN Access Configuration Guide.
• Ensure that you have connectivity between the two routers in the network segment, and also that the traffic is routed through the routers on which the IPSec tunnel is configured. For example, if you want to send traffic from Router R1 to Router R4 through an IPSec tunnel set up between Routers R2 and R3, you must ensure that connectivity exists between R1 and R4, with traffic passing through R2 and R3.