csmall I'm experiencing a vpn tunnel dropping if there is not constant communication over the tunnel. The server is running an older version of openvpn(2.1.3) and client is running 2.3.2. Does the difference in versions have any impact? The server has keepalive 10 60 configured. On the client, I have tried adding a number of configuration options but nothing seems to help. I've tried adding some of the following to the client config. persist-tun persist-key keepalive 10 30 (and other number combinations) ping 10 (and other number combinations including 1) None of these seem to change anything. The tunnel will be ok for anywhere between under a minute and a couple of minutes it seems, then it drops. If I run a continuous ping over the tunnel from either side, it stays up until that ping is killed. Any help would be much appreciated.