Configure L2TP/IPsec server behind NAT-T device - Windows Server
...You can also apply the AssumeUDPEncapsulationContextOnSendRule DWORD value to a Microsoft Windows XP Service Pack 2 (SP2)-based VPN client computer. To do so, locate and then select the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPSec registry subkey....
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/configure-l2tp-ipsec-server-behind-nat-t-device
?? ???????? L2TP/IPSec VPN ??????????? ? Windows
...????????? ???????? ????????? AssumeUDPEncapsulationContextOnSendRule: 0 ? (???????? ??-?????????), ??????????????, ??? VPN ?????? ????????? ? ????????? ??? NAT;...
https://winitpro.ru/index.php/2017/10/24/reshaem-problemu-podklyucheniya-k-l2tp-ipsec-vpn-serveru-za-nat/
Windows 10 L2TP VPN connection issue - Super User
...To get the connection to work, I had to add the "AssumeUDPEncapsulationContextOnSendRule" registry Key, and then totally disable Windows Firewall?the VPN connects perfectly this way....
https://superuser.com/questions/1481394/windows-10-l2tp-vpn-connection-issue
?????? ?? ???????????? l2TP/ipsec? ? ???? Q&A
...????????????, ??? ??????? ??????????? ?? L2TP/ipsec ?????????? ??????. ???????? ???????? ? ??????? "AssumeUDPEncapsulationContextOnSendRule" ?? ????????? 2. ?? ???????...
https://qna.habr.com/q/1150674
????VPN?L2TP?????????????????? | ???????????
...???? AssumeUDPEncapsulationContextOnSendRule ??????????????????????????? ??2??? ???? ????????????OK??? ???????????????????VPN?????????????...
https://blackbird-blog.com/vpn-l2tp-trouble1
How to Connect L2TP/IPSec VPN Server From Windows
...Note. Possible AssumeUDPEncapsulationContextOnSendRule values are: 0 ? (a default value) assumes the VPN server is directly connected to the Internet (without NAT); 1 ? the VPN server is located behind a NAT device; 2 ? both the VPN server and client are behind a NAT....
https://woshub.com/l2tp-ipsec-vpn-server-behind/
L2TP IPSec VPN fails on Windows ? Enable UDP encapsulation
...REG ADD HKLM\SYSTEM\CurrentControlSet\Services\PolicyAgent /v AssumeUDPEncapsulationContextOnSendRule /t REG_DWORD /d 0x2 /f Posted in VPN, Windows ·...
https://blog.virtualcenter.com/2018/07/10/l2tp-ipsec-vpn-fails-on-windows-enable-udp-encapsulation/
????????? ??????? L2TP/IPsec ?? ??????????? NAT-T
...????? ??????? ? ????????? ???????? ??????? AssumeUDPEncapsulationContextOnSendRule , ????????? ????????? ????????....
https://learn.microsoft.com/ru-ru/troubleshoot/windows-server/networking/configure-l2tp-ipsec-server-behind-nat-t-device
How to Make Windows 10/11 Connect to L2TP VPN: Registry Fix
...Launch Command Prompt as admin. Paste the following: REG ADD HKLM\SYSTEM\CurrentControlSet\Services\PolicyAgent /v AssumeUDPEncapsulationContextOnSendRule /t REG_DWORD /d 0x2 /f Once the operation completes successfully, also paste: REG ADD HKLM\SYSTEM\CurrentControlSet\Services\RasMan\Parameters /v ProhibitIpSec /t REG_DWORD /d 0x0 ......
https://windowsreport.com/windows-10-connect-l2tp-vpn-reg/
??? ????????? ?????????? Win -> L2TP+IPsec ????? NAT?
...????????? ????? AssumeUDPEncapsulationContextOnSendRule ???????? 1 ??? 2 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan\Parameters ????????? ????? ProhibitIpSec ???????? 1 ???????? ????? AllowL2TPWeakCrypto ???????? 1 ??? ????? ?? ?????? ??????....
https://qna.habr.com/q/615038