| Event Id | 21164 |
| Source | Microsoft ISA Server Job Scheduler |
| Description | The Firewall service detected that the dial-up connection %1 was assigned an IP address from network %2. This may indicate a configuration error. |
| Event Information | According to Microsoft Cause: This event occurs when a dial-up connection was assigned an IP address that is already included in another network. This could indicate a configuration error or a possible spoof attack. Resolution: Check the IP address ranges of the dial-up network, and verify the configuration with the service provider (ISP). |
| Reference Links | Event Id:21164 Source Id:Microsoft ISA Server Job Scheduler |
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