DNS not working properly

  • I have created 2 OpenVPN servers on my pfSense box.
    1 on UDP 1194
    1 on TCP 443

    Both are setup to forward my pfSense box as DNS server (

    I can connect to both servers without problems.
    But when I'm connected to the TCP 443 OpenVPN server I cannot get DNS work.
    "connection timed out; no servers could be reached"

    When connected to the UDP OpenVPN server I don't have this problem.

    Both servers are setup the same, except for the listen port.

    Wha could be the problem?

  • LAYER 8 Global Moderator

    your not handing out dns in the tcp one..  Different firewall rules on your openvpn instance..

    Make a connection using udp, look at the ipconfig /all of that client, look at its route print.  Then do the same for the tcp connection.  What interface of pfsense dns are you using?  For example I point vpn clients to pfsense lan interface for dns.

  • I have "fixed" this.
    Had to add the OpenVPN subnets to the allowed list for the DNS resolver.

  • LAYER 8 Global Moderator

    Yup the resolver has access list.. and remote networks would have to be allowed..

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