I have a TMG 2010 server that I have connected to a ISA 2006 server by site to site vpn. I can ping from TMG server to internal IP on ISA LAN. I can also ping from ISA server to internal IP on TMG LAN. I cannot ping or otherwise connect from TMG lan IP
to ISA lan IP or vice versa. I don't see anything being blocked in the logging. What kind of routes need to be setup to make this work? I have tried everything I can think of, but I still can't make the connection. Any help would be appreciated.
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