ER605 VPN connection errors
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Good evening.
I purchased an ER605 V.1 router, respective Access Points and Switches compatible with Omada OC200 Hardware controllers from a dealer.
Given that I had no difficulties until a few days ago when after updating the controller to version 4.4.6 and the router to version 1.1.1, I am experiencing persistent problems with the VPN Servers configurable from the dashboard.
Basically I encounter the following connection error on all clients from which I try to connect: "The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer."
I have clearly followed all the solutions on your site (https://www.tp-link.com/it/support/faq/1029/) and the various Microsoft FAQs but without success, thinking therefore that the problem is the server VPN.
I made sure that the modem (provided by the internet line manager) is correctly forwarding the ports, correctly reaching all the open ports "manually" on the router from the public IP having configured a DMZ on the router IP.
Also from the dashboard I manually reconfigured VPN users and servers several times, also changing the connection type to IPSEC, OpenVPN or PPTP without success.
I have also seen from the change-logs published on the site that changes have been made in the management of the VPNs in the latest version of the router and I therefore do not want there to be any bugs in the firmware.
I would like to know if there is any advice you can give me about it before returning the product to the supplier.
Thanking you in advance, I remain available to provide further clarifications.
Greetings
Leonardo
Hi, you will forgive me if I am using the translator to answer you and if the attachments are in Italian.
I confirm that you have followed the guide mentioned and that you have correctly set up a VPN pool other than the local one but in the status of the VPN (Insight ---- VPN status ---- VPN Tunnel) I have no evidence of active connections.
I leave attached the screenshots I made.
Thank you for being so quick in responding and I remain available for further clarifications.
Thanks, Leonardo
Good morning.
as I told you in a few posts back, only a dmz is configured from the main modem of the internet line manager to the tplink router.
As per the screenshot that I leave you attached, only three ports are configured on the controller that all go to my QNAP with hosted web service.
As you can see for yourself nothing else has been configured or changed after the update.
Clearly I have correctly configured the VPNs on all clients, including pre-shared key.
I remind you that until recently, with the same configuration, everything was working regularly.
However, I leave you new screenshots attached.
Thank you for your availability and I remain tuned for further clarifications.
Leonardo
