I have the following installation:
Organization 1: MX450 as VPN concentrator
Organization 2: Z3 as a teleworker that also running client VPN
I need the Z3 to open a site to site VPN (which must be manual since they are not on the same organization) and also have clients connecting to it using l2tp client VPN.
The problem is that both use port 4500...
This photo describes the installation