How do I configure an ISA 2006 Server (specifically the NICs) for Public IP Passthrough?
Posted on 2009-02-11
Great site. Have been using it for almost 9 months and wouldn't trade a minute of my subscription. Have an issue I need some help with...
I have a company network which is using MS ISA Server 2006 in a 3 Tier mode. We are also using using MS Office Communications Server 2007 and as a result I have an OCS Edge Server in the Perimeter Network. I had originally just been NAT'ing the one IP address to a private perimeter network address (Access Edge). However, now that we are moving to Live Meeting and Audio/Video, I need a public IP address for the A/V Edge NIC.
As a result, I upgraded my Telco lines and purchased a block of 13 IP addresses.
So I have configured my ISA Server as follows...
External NIC - xxx.68.71.115
Internal NIC - 10.1.10.1
Perimeter NIC - xxx.68.71.117
Network Rule is setup to allow Route and not NAT to the Perimeter network.
On the OCS Side, I have an edge server with the following IP Addresses...xxx.68.71.118-120.
For some reason I can not ping the Perimeter from the ISA Server and the ISA Server from the Perimeter. There is no traffic to speak of going between the two zones. I can not figure out why.
Don't know if this is a rule issue in ISA or a NIC configuration error. Any help would be appreciated.