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Unable to get OpenVPN Server to work on RT-AC86U with ASUSWRT-Merin

Discussion in 'Asuswrt-Merlin' started by punkinpun, Feb 15, 2020.

  1. punkinpun

    punkinpun New Around Here

    Feb 15, 2020
    My Router: RT-AC86U

    Without ASUSWRT-MERLIN, the OpenVPN server with the ASUSWRT works perfectly. But it doesn't work after I have upgraded with ASUSWRT-MERLIN firmware. I tried 384.15 and 384.13 with no avail! If I reverted it back to ASUSWRT or RT-AC86U_3.0.0.4_384_81049, the OpenVPN server on router works again. All settings remain unchanged as-is in either firmware.

    In the system log, I found TLS Error with ASUSWRT-MERLIN firmware when the client was trying to connect.

    Feb 16 01:18:18 ovpn-server1[1503]: TLS: Initial packet from [AF_INET], sid=20cb05c9 6714b29d
    Feb 16 01:19:18 ovpn-server1[1503]: TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
    Feb 16 01:19:18 ovpn-server1[1503]: TLS Error: TLS handshake failed
    Feb 16 01:19:18 ovpn-server1[1503]: SIGUSR1[soft,tls-error] received, client-instance restarting
    Feb 16 01:19:23 ovpn-server1[1503]: TLS: Initial packet from [AF_INET], sid=4a8ecf69 8b8cf5d5


    Any suggestion or help to fix? Thanks.
    slytho likes this.
  2. L&LD

    L&LD Part of the Furniture

    Dec 9, 2013
    After flashing the RMerlin firmware (384.15_0 recommended), did you do a full reset to factory defaults followed by a minimal and manual configuration to secure the router and connect to your ISP?

    See the M&M Config and the Nuclear Reset guides to get your router to a good/known state.
  3. ColinTaylor

    ColinTaylor Part of the Furniture

    Mar 31, 2014
    Test the connection from outside your LAN and it should work.
    slytho, punkinpun, CaptainSTX and 2 others like this.
  4. punkinpun

    punkinpun New Around Here

    Feb 15, 2020
    Yes, it works! Testing from outside works like a charm:)
    Many thanks.
  5. slytho

    slytho Occasional Visitor

    Jun 16, 2013
    Thank you for your post. :) I have the same problem but no time yet time to write a post.

    May I ask what is the reason for that from the network's point of view? I also created a forward rule, reverted changed settings like DNS to standard ... but to no avail, I had the same error as punkinpun posted.