We are rolling out MAGs and a big Pulse implementation. We have a lot of small remote VPN connected sites (300-ish) that are all headed by SRX210's. Normally these 210's use IPSEC back to an ASA5510 that we are migrating away from. Does the SRX support any type of tunnel connection back to the Pulse? It would be awesome to use a common VPN concentrator for all this stuff.
I have not "done" this kind of setup. I have looked it up a bit.... But hard to find anything about this kind of setup. I would suggest making a lab setup an trying it out!. Or someone else on the forum must have made a setup as you are looking for.
The last thing is asking the question via your juniper SE
The MAG does dynamic vpn to clients and the VPN you are talking about is site-to-site vpn between routers.
The MAG cannot terminate site-to-site connections.
But the SRX can perform the same function as the ASA in your previous setup.