Hi, Tim
Thanks for your quick answer.
Regarding use a traditional VPN, we're currently using VPN connection in some cases. However, our IT security department has strict requirements when a site has to connect to our headquarters facilities via VPN (network requirements, PC & laptop requirements, firewall requirements and so on). In some cases, these requirements aren't fulfilled (sites at business centers, office shared with our partners...) and we need a different alternative.
Specially in those cases, we need to allow some users to login to our ECC environment and, additionally, we can't deploy a SAProuter on the other side because is "out of our scope". This is the reason why we raise the question.
Many thanks,
Sergio