vpn connection, not successful

2022-03-14 08:12:49

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vpn connection, not successful

2022-03-14 08:12:49

Model: ER605 (TL-R605)

Hardware Version: V1

Firmware Version: 1.2

The vpn connection runs in a vacuum, yet I followed the tutorial

La connexion vpn tourne dans le vide , j'ai pourtant suivis le tuto

Rappel :

Modem Routeur 192.168.0.100

Lan 192.168.1.xxx

IP of TL-R605 192.168.1.100

connection WAN is UP

LIVEBOX french isp moden router

wan is OK

VNP Users

I can't find where it can be blocked my windows workstation is up to date
I am using the Microsoft built-in VPN client.

Je ne trouve pas ou cela peut bloqué mon poste Windows est a jour

j'utilise le client VPN integré microsoft

Thanks for help !

Best regards

9 Reply

2022-03-15 01:11:21 - last edited 2022-03-15 01:21:45

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Re:vpn connection, not successful

2022-03-15 01:11:21 - last edited 2022-03-15 01:21:45

How to establish an L2TP Server by Omada Gateway in Standalone mode?

Hello and welcome.

I am sorry that your issue is not clear to me. Are you saying that your Windows PC cannot connect to the VPN? If you are talking about Windows keeps popping up error like "security layer error" when connecting, please refer to the Windows forum/update history to update your computer. L2TP error.

Well, from the DMZ, I don't think you configure the LAN IP of ER605(192.168.1.100) as the rule. You should DMZ the WAN IP of ER605.

You have to also make sure that your modem router supports VPN passthrough. Or you have to open ports UDP500&4500 on your modem router. It is recommended to use static WAN IP on your ER605 for port forwarding.

It is recommened to use a single NAT. You are now experience a Double-NAT which could cause the setup not easy.

Best Regards! >> Omada EAP Firmware Trial Available Here << >> Get the Latest Omada SDN Controller Releases Here << *Try filtering posts on each forum by Label of [Early Access]*

LV2

2022-03-15 08:55:24

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Re:vpn connection, not successful

2022-03-15 08:55:24

@Hank21 thank for your reply

This Windows error message:

The L2TP connection attempt failed because the security layer error during processing initial negotiation

My PC is ok to update

IP wan adress is static

UDP ports 500 and 4500 is open

for the wan address 80.xxx.xxx.xxx if I put it in the dmz nothing will point to er605 !! it will loop

192.168.0.100 ------ 192.168.1.100
isp modem router ------ ER-605

80.xxx.xxx.xxx ------ VPN server
Static DMZ

2022-03-15 09:28:36

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Re:vpn connection, not successful

2022-03-15 09:28:36

If you can test other devices, please test. The error is the the one I am talking about in the previous reply. The L2TP error. That is caused by the Windows update. Windows has released another patch to fix this. Please review the solution above.

Best Regards! >> Omada EAP Firmware Trial Available Here << >> Get the Latest Omada SDN Controller Releases Here << *Try filtering posts on each forum by Label of [Early Access]*

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2022-03-17 07:16:12 - last edited 2022-03-17 17:31:24

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Re:vpn connection, not successful

2022-03-17 07:16:12 - last edited 2022-03-17 17:31:24

@Hank21

I tried another L2TP connection on a different site from the same PC and it works very well

I tried this evening to configure a PPTP connection which surprisingly works very well on the TP-LINK I don't see why L2TP isn't working.

2022-03-18 08:24:56 - last edited 2022-03-18 08:50:37

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Re:vpn connection, not successful

2022-03-18 08:24:56 - last edited 2022-03-18 08:50:37

Are you saying that you have this computer connected to another L2TP server and there were no errors at all?

I read your posts again and I pointed out in the previous about your port forwarding errors. You should DMZ/port forwarding your WAN IP that you see on ER605. I don't understand your 192.168.1.100. What is that IP? Do you mean that is your LAN IP, your ER605 LAN IP?

If you have trouble with this, I suggest simply your network. Set up your modem to bridge mode and do not use double NAT.

Best Regards! >> Omada EAP Firmware Trial Available Here << >> Get the Latest Omada SDN Controller Releases Here << *Try filtering posts on each forum by Label of [Early Access]*

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2022-03-18 08:48:10 - last edited 2022-03-18 08:54:18

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Re:vpn connection, not successful

2022-03-18 08:48:10 - last edited 2022-03-18 08:54:18

@Hank21

I'm have PPTP connexion is work to TP-LINK

Modem roteur ISP : : 192.168.0.100

Tp-Link r605 LAN : 192.168.1.100

adress 192.168.0.150 is Tp-link IP to modem router isp assign

2022-03-18 08:52:56 - last edited 2022-03-18 08:54:24

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Re:vpn connection, not successful

2022-03-18 08:52:56 - last edited 2022-03-18 08:54:24

Could you please check the setup guide and the WAN IP and your port forwarding or DMZ settings on your modem router? It would be much easier to test if the L2TP VPN server works or not when you set your modem to bridge mode.

Best Regards! >> Omada EAP Firmware Trial Available Here << >> Get the Latest Omada SDN Controller Releases Here << *Try filtering posts on each forum by Label of [Early Access]*

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2022-03-18 09:03:06

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Re:vpn connection, not successful

2022-03-18 09:03:06

bridge mode is not possible on the LIVEBOX isp french modem/router @Hank21

DMZ 192.168.1.100 nat port 500 and 4500

PPTP is functional so it passes