@itadmin:
Hi,
I decided to try a tunnel to the 172.16.100.x network for the time being just so I can see if I can get that one up first without having to go behind the router.
When I ping from inside the juniper firewall I can get across. But the router behind the firewall can't seem to make it. Also from the main office over to the branch nothing happen. I will post my juniper config below. I assumed for some reason that if my firewall with a 172.16.100.254 address can ping across then so should the router on 172.16.100.1 be able to as well?
Badly, I don't know Juniper firewall but I suppose that success ping from LAN interface does not mean that someone on the LAN can ping through the Juniper… It's necessary to check how Juniper manage packets: does the packets goes through the NAT first, then the VPN and so on... Do you see what I mean?
Last but not least, I suppose that the Juniper is the default gateway for your Branch LAN? If not, you'll have to add a route on this default gateway telling that the Main Office LAN is behind the Juniper...
Hope this helps.