Hi,
I have OpenVPN configured on PFSense 2.2.
What I've noticed on my Windows 7 work machine (which is on an ADSL line/not firewalled/not part of corp LAN), is that I can successfully connect to my VPN server (I run the openvpn gui as administrator and my account is a local admin). Once done, I can ping and rdp to any server in the LAN. After a couple of minutes, if I do ping -t on a LAN server, the pings fail and the vpn connection drops. The VPN connection then goes green again and pings succeed. This machine is not firewalled. I get the same behaviour at home.
I used the wizard so firewall rules were created, like to my OpenVPN UDP port (1180).
I followed this article:
https://www.highlnk.com/2013/12/configuring-openvpn-on-pfsense/
Looking at the logs, I get pfsense inactivity timeout (--ping-restart) restarting. My gateway has pings fail if I ping it, but my host says that the firewalls block pings (but some get through). Whatsmore, I've had pfsense and openvpn working fine
I don't have two clients connected at the same time either, but the client is installed on 3 machines (the two in this post + a laptop).