VPN client does not connect to OpenVPN server (error).



  • Hi,

    I can't connect to my OpenVPN server. It should work with the current configuration because I have done it before in the far past and it wasn't that hard, unless they changed something overtime.

    This is the error I get, I think this is a general error, which basically means it can be anything. I double checked the basic settings, gone through the manual over and over again. It is quite possible I might have overseen something. I am using a dynamic host name (no-ip) instead of an Interface address (Export key tab).

    It is worth to mention and I included it in another screenshot, the OpenVPN server does not seem to be running, the green start button does not respond. As far as I can remember, this should be on prior connecting.

    0_1530382576793_Screenshot_2018-06-30_18-28-32.png

    0_1530382596458_Error.jpg

    Can you guys help me out? Or can someone give me a lead where to start?

    Other screenshots can be provided if necessary, but please God no,...



  • As the server is not running it's naturally clear that the client can't connect.

    The OpenVPN log on the server should provide the reason for the server cannot start.



  • Hmm, indeed, apparently the error was related to a wrong combination of a network statement and its subnet mask. The tunnel network does not accept /16 so I used /24. Very odd I must say the least. 172.16.1.0/16 is valid one right and therefore should work.

    Thank you


  • Rebel Alliance Developer Netgate

    (a) There is no reason to use a /16 for a VPN tunnel network, especially not with topology subnet. You are not going to get 65,500+ clients connected to a single OpenVPN server.

    (b) 172.16.1.0/16 is not a valid network specification, 172.16.0.0/16 is where that /16 starts, which is the cause of that error.



  • Hmm, yes indeed.