View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000086 | Windows and other desktop OS | Server | public | 2014-02-21 22:57 | 2015-11-10 23:15 |
| Reporter | DigitalMy | ||||
| Priority | normal | Severity | major | Reproducibility | N/A |
| Status | resolved | Resolution | fixed | ||
| Platform | OS | Windows | OS Version | 2008R2 | |
| Summary | 0000086: L2TP connection gives Error 809 | ||||
| Description | VPN server is over the NAT device. PPTP goes OK | ||||
| Tags | No tags attached. | ||||
| FinishDate | 2015-11-10 | ||||
| StartDate | 2015-11-09 | ||||
| WasteTime | |||||
| PriorityIndex | 7 | ||||
| LaboriousnessIndex | 1 | ||||
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Add record to registry DWORD (32 bit) AssumeUDPEncapsulationContextOnSendRule with value = 1 to path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PolicyAgent tested as no result |
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Windows6.1-KB2028625-x64.zip (1,054,387 bytes) |
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This is KB2028625 issue |
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Tested like: wireshark monitored UDP ports 500 and 4500 for L2TP on both sides : server and client - and proved that UDP data exchange is not blocked |
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From the same client OS we can connect to another server using L2TP, which is not behind another NAT. From another client (OS Android) we can connect to this server using L2TP. So, this must be another IPsec issue (non-logging). |
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On both server and client (Windows) set registry keys path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PolicyAgent add: type = DWORD (32-bit) Name = AssumeUDPEncapsulationContextOnSendRule Value = 2 And it works |