We have a customer who has 5 sites. From the headquarter i have setup an IPSEC connection to every site. Now, from our internal office we have an IPSEC connection to the customer headquarter. We want to access every site network without creating a tunnel to each customer site(again from our router). How we can do that?
if the customer sites can talk to each other (i.e. routing if working between all of their sites) then all you would need to do is add the routes between your office and their sites, no need for additional tunnels..
It does not really matter … Once the tunnels are established, it is simply a routing issue… if the sites can communicate to HQ, and you have a tunnel to HQ. You should be able to reach the sites, and the sites reach you, as long as you have appropriate routes/routing setup