Changing External IP


  • Hi,

    I have recently taken over maintenance of a 2008 R2 server with Forefront TMG 2010 installed. The server has two NICs, External and Internal.

    The client is switching ISPs but is in an overlap period, so both broadband connections are active--I can switch back and forth.

    When I change the External NIC to the new ISP's static IP, PCs (Win7/Ent) can no longer connect to the Internal NIC. If I revert to the original External static IP, everything is fine.

    Please can anyone help me figure out what I need to reconfigure on TMG so that the Internal NIC works again?


    • Edited by gkarasik Sunday, March 11, 2018 9:48 PM
    Sunday, March 11, 2018 9:48 PM