Isa IP spoofing

I installed Isa server behind a router Netopia that maps an public IP
address with 4 Ip The external NIC of isa is,
the internal Nic is with a publish internal web server. When I
try to connect to Isa from Internet, it replay with a "no server found"
and records "IP spoof" alert from Internet IP address. I think the problem
is that packets arriving on the external interface but claiming to come
from an internal IP (
It's corrects? Only solution is to get for ISA external Nic a public IP?


mario tognetti

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