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DNS issue in ISA 2006

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Last Modified: 2010-04-21
My brain is numb; I have been looking at this for awhile and I know Im over looking something simple? I can connect fine to our network and I can browse to server shares by IP. My basic issue is I can not resolve host names when connecting into our VPN. Im thinking DNS is an issue somewhere.

My setup:
ISA 2006 Enterprise
Win2003 Enterprise R2

Purpose of the ISA server is only for VPN connection into our network. Im using the back firewall template. I have PIX in front, ISA in rear. ISA is on a second card on the PIX. I have TTC on our main thoroughfare.

I have five rules created

1. Allow HTTP from local host to external
2. Allow HTTP from internal to external
3. Allow DNS to external
4. Allow access from VPN clients to internal
5. Default rule deny all

On my external NIC
IP: 172.16.1.2
Subnet: 255.255.0.0
Gateway: 172.16.1.1
DNS: none
WINS: none

On my internal NIC
IP: 10.2.1.11
Subnet: 255.255.0.0
Gateway: none
DNS: 10.2.1.80
WINS: 10.2.1.81

My VPN assignment method is static 172.16.100.1-172.16.100.120 under advanced settings for VPN clients I put in our DNS and WINS servers.

I would appreciate any help. Thank you.
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