As the subject says, our Forefront TMG logs are being flooded with Denied Connections with result code 0xc0040050  FWX_E_TCPIP_DROP_IP_NOT_LOCALLY_DESTINED.

Unlike the other posts discussing this error, there is no NLB involved and it is not running as a single interface proxy, we are using TMG as a gateway so it has two interfaces. The switch also has broadcast traffic disabled on the port connected to TMG.

The logs are very mysterious and provide very little to go on as the Network interface and all IP addresses for these errors in the logs are blank, and the destination port is shown as zero. Note that other packets are being logged correctly and these fields are turned on in the firewall logs.

Any help to get something meaningful to show in the logs or resolve this error would be much appreciated.

• Edited by Edward Forgacs 4 hours 42 minutes ago