Good morning all,
I have a Windows 2008 r2 server, dual homed, providing AD Services, DNS, DHCP allocator through NAT and NAT. There is no physical firewall at this time as the external interface of the Server connects to a cable modem.
The server works fine. Accessing the internet and Event Viewer, DNS logs show no fails.
The problem is Internal clients can not access the internet through a web browser. I open a command prompt and using NSLookup I receive DNS responses from the ISP DNS servers and Root hint servers.
When I view NAT mappings, sometimes the Internal client is listed, sometimes it is missing, but under General both Internal and External Interfaces show traffic passing.
My configuration:
Server:
Host name LABSVR
Primary DNS LAB.LOCAL
IP Routing Enabled YES
DNS Suffix Search list:
LAB.LOCAL
ATS.COM
Internal interface
Static IP add 192.158.5.1
Subnet Mask 255.255.255.0
Default gateway 0.0.0.0
DNS Server 127.0.0.1
External Interface
DHCP Configured YES (IP from ISP)
Client:
DHCP Config NO
IP Address 192.168.5.2
Subnet Mask 255.255.255.0
Gateway 192.168.5.1
DNS 192.168.5.1
NOTE: After reasearching here, I have also configured the registry key EnableEDNSProbes with a value 0
and I have ensured the Network Service account has read/write access the the AdminSDHolder object.
Thanks in advance for your time