L2TP Passthrough & IP Protocol 50 & 51
|
Does the EG105G-V2 support L2TP/IPSec pass-through to a Windows server? How do I port forward(port map) IP Protocols 50 ESP & 51 AH ? |
|
Hi sir, you can follow the guide in this link to configure the VPN between Reyee EG with PC. https://community.ruijienetworks.com/forum.php?mod=viewthread&tid=2304 |
GTAC-Wayne replied at 2022-7-23 22:57Hi sir, could you please provide more information about the '50 ESP & 51 AH '? |
GTAC-Wayne replied at 2022-7-23 22:57 Hi GTAC-Wayne, Thank you for the reply, but I do not wish to create a VPN to the Ruijie router. The VPN server is on a Windows Server 2019 behind the Ruijie and I wish to connect to it via L2TP/IPsec. Currently there is a PPTP VPN server running and your router allows connection to the Windows VPN server. PPTP pass-through is allowed and your router automatically forwards IP Protocol 47 GRE to the internal IP. I would like the change the VPN from PPTP to L2TP/IPsec, but I am not sure if L2TP pass-through is allowed. Thanks |
Edited by Bradoc at 2022-7-24 02:30 GTAC-Wayne replied at 2022-7-23 22:57Hi GTAC-Wayne IP Protocol 50, ESP, Encapsulation Security Payload, is not a TCP and UDP based protocol. IP Protocol 51, AH, Authentication Header, is not a TCP and UDP based protocol. IP protocol ID 50 should be set to allow IPSec Encapsulating Security Protocol (ESP) traffic to be forwarded. Finally, IP protocol ID 51 should be set to allow Authentication Header (AH) traffic to be forwarded. It is a common thing to check if a VPN connection fails through a firewall. PPTP uses IP Protocol 47, GRE, Generic Routing Encapsulation List of IP protocol numbers - Wikipedia |
Bradoc replied at 2022-7-24 02:18 Hi sir, sorry for not reply timely.  Whether you want configure VPN like this in your windows server? If yes, you can configure them If the connection between server and client is normal |
GTAC-Wayne replied at 2022-7-27 15:37 Okay, thank you for getting back to me. So i can just port forward(port map) UDP 1701 & 500 & 4500 to the Windows server IP and the L2TP\IPSec VPN should work? |
Bradoc replied at 2022-7-27 16:06  if you want configure VPN like this in your windows, then you not need to do port forward(port map) UDP 1701 & 500 & 4500 . |
GTAC-Wayne replied at 2022-7-28 10:06 Thank you GTAC-Wayne. It does not seem to work, so I will try the routers built-in VPN server and troubleshoot the Windows Server VPN later. |
Bradoc replied at 2022-7-29 13:59 Dear sir Sorry for not reply timely and thank for the reply. For communicating effciently and timely. Suggesting you communicate with us about this matter on our RITA--Live Chat. https://www.sobotws.cn/chat/pc/v2/index.html?sysnum=eee7ec2e351e4569a4791536fb5f0973&tnk=1640783350297 |
GTAC-Wayne replied at 2022-7-29 16:37 I have found the answer to the problem. I have to create a Registry Key on the client side Windows 10 PC. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PolicyAgent AssumeUDPEncapsulationContextOnSendRule REG_DWORD 2 Your router does allow L2TP/IPsec passthrough, through NAT. Thank you for your assistance. |
Bradoc replied at 2022-7-31 17:08 Noted it, thanks for the reply. Welcome to contact us again if you have any questions or suggestions  |
This site contains user submitted content, comments and opinions and is for informational purposes only. Ruijie may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Ruijie can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. Ruijie disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Ruijie Community Terms of Use.
More ways to get help: Visit Support Videos, call us via Service Hotline, Facebook or Live Chat.
©2000-2023 Ruijie Networks Co,Ltd
Level 1
