Hello,
I have a client with a Forefront TNG 2010 server on a 2008 AD domain. It is configured with 2 NICs, an internal and an external. The internal has the internal address of the server bound to it and nothing else. The external has quite a few of their external IPs bound to it. They have a full 255 address block and the majority are used.
A strange thing happened the other day. We had to reboot the server and when it came back up, several things weren't working including VPN and Email. Some troubleshooting revealed that there were only 3-4 external IPs bound and listening on the external NIC. And none of them were the main IP configured on the NIC. I checked the NIC config and saw all the addresses were in there as they should be, but the addresses weren't in the registry entry for the NIC config, HKLM\System\CurrentControlSet\Services\{ID of NIC}\Parameters\TCPIP\IP Address .
I have no idea what could have caused this. I fixed it easily enough by adding the missing addresses back into the registry entry and disabling and re-enabling the NIC but I would like to prevent from happening again if they reboot the server.
Thanks.