So far, we have discussed how to connect the two sites through an IPSec tunnel. Most readers will be satisfied with that, as these scenarios cover most real-life situations. However, we may have a need to interconnect three or more sites using the IPSec tunnels,
Although rare, these scenarios are possible. However, we need to plan everything carefully, as we will need more IPSec policies between routers. Therefore, I will describe here how to connect the “road warrior” users with distant site.