my "dev blog" or my place to for stuff not suitable for cameronwalker.nz
I’ve been experiencing persistent issues establishing a functional L2TP/IPSec VPN connection at home. After thorough research, I discovered that modifying the Windows registry was necessary to enable proper operation.
Win + X
and select Windows Terminal (Admin)
or Command Prompt (Admin)
.Enter
after each command:PowerShell
REG ADD HKLM\SYSTEM\CurrentControlSet\Services\PolicyAgent /v AssumeUDPEncapsulationContextOnSendRule /t REG_DWORD /d 0x2 /f
REG ADD HKLM\SYSTEM\CurrentControlSet\Services\RasMan\Parameters /v ProhibitIpSec /t REG_DWORD /d 0x0 /f
0x2
enables IPSec to traverse NAT, which is essential for many home and small office networks.