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yanivf's avatar
yanivf
Apprentice
Aug 18, 2019

Can't VPN using Windows client - WARNING: No server certificate verification method has been enabled

I'm trying to connect to the VPN server using OpenVPN but I get the error "WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.". I have done all the steps mentioned in the netgear KB and also looked on the web and couldn't really find any directions to get it working.

 

I tried the following suggestions I found on the web without luck:

1) get the latest firmware (I'm running 2.3.5.30)

2) add the port to the blocked services without success and set it to accept all IPs.

3) Add "remote-cert-tls server" to the end of the config file

 

Note: The OpenVPN works fine on my mobile devices.

 

Any help would be greatly appericated.

4 Replies

  • petieg1's avatar
    petieg1
    Aspirant
    Aug 19, 2019

    Add remote-cert-tls server to config file. 

     

    Remove error in the client at least. 

    • yanivf's avatar
      yanivf
      Apprentice
      Aug 19, 2019

      Thank you petieg1 ,

      I have done this step at #3 as you can see from my original response. It does pass the original error however fails in the next one. I'm thinking I might have some firewall i need to punch through. Will continue doing some more investigations.

      • CrimpOn's avatar
        CrimpOn
        Guru - Experienced User
        Aug 19, 2019

        ho, yes.  Windows Firewall will definitely block the VPN.  Have to "add another program" to the Firewall rules.

        I did this with OpenVPN and also with Tunxten.  (trying different VPN clients)

  • CrimpOn's avatar
    CrimpOn
    Guru - Experienced User
    Aug 19, 2019

    I, also, have problems with the Windows VPN.  The first time, I neglected to print off the "instructions" that pop up when the link is displayed (not the BIG link that says "Windows", but the tiny link under that).  So, I had not created the NETGEAR-VPN network link that is required.  I also created problems by renaming some files but not renaming the link to the files that is inside the opn setup file.