freebsd openvpn and firewall protocols

[Dave]

Hello,
    I'm running openvpn via ports on a freebsd6 machine. This box is natted 
behind another freebsd6 box which uses pf as it's firewall. I've got windows 
clients that are outside the firewall with openvpn windows client. I was 
getting an error about tls parameters failed to be negotiated within 60 
seconds and the connections kept failing. This was with udp. I'm wondering 
if this is a nat issue, if the connection can not be natted. I changed proto 
udp to proto tcp in both the client and server, restarted the server, and 
this time it connected. I checked ipconfig on the client and it did have two 
ip addresses, a 192.168.2.0/24 address for the wired nic connected to the 
network the box is on, and a 192.168.9.0/24 ip for the vpn_tap adapter. My 
second issue is i can not do anything with the remote network, pinging the 
remote server via ip or dns name failed, and windows file sharing also did 
not work. I'm wondering if this is an issue with nat or routing? I've got 
ethernet bridging set up.
Thanks.
Dave.