I am trying to out my config using 16384 size keys (please I don't want to get into a discussion about using large keys). I am using my working config except for substituting my large keys. My config works with a 8192 sized DH but not with 16384. I am getting a 'inactivity timeout' from the server after about 3 minutes during the TLS handshake. I have read it will take longer to negotiate with these large keys. Based on other replies I have gotten I suspect that it is linux/iptables...
Testing OpenVPN with large DH parameters.
Testing OpenVPN with large DH parameters.