DNS not working properly

[Panja]

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 (192.168.1.1).

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?

[johnpoz]

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.

[Panja]

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

[johnpoz]

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