I have an SBS 2008 network setup whereby two ADSL modems are connected to a D-Link Dual WAN load balancer and a 3rd standalone ADSL modem which has a static public IP.
ISA 2006 sits between LAN and D-Link LB, and the standalone router has builtin firewall and connected directly to LAN (using NAT).
All HTTP, RDP, FTP, etc traffic goes out through ISA 2006, and only SMTP goes over standalone router.
I could not route multiple WAN connections through ISA 2006, but would like to do this now with TMG 2010 so I can remove the D-Link LB and put all WAN connections through one box.
Ideally the new TMG 2010 server would have 4 NICs, 1 internal, 2 x ADSL that are load balanced, and 1 ADSL for the static IP.
Is this possible?
Then would I be able to route traffic by protocol, i.e. RDP, HTTP, FTP over 2 x ADSL LB NICs and then SMTP over 1 x ADSL static IP NIC?
I have attached a Visio JPG of what I would like to end up with. In the end, I would like everything to have one default gateway (192.168.2.1).