Cant connect to VPN through my NAT firewall

[jboss1995]

I'm trying to connect to my poptop VPN on the internet. I had it working for a time but just stopped. I replaced a freebsd server NAT firewall server with a ubuntu NAT firewall. Like I said it worked for a time until I setup a poptop server on it as well (it works fine) but i can't connect to VPNs on the outside. Here is my iptables

ACCEPT all -- anywhere anywhere
ACCEPT tcp -- anywhere anywhere tcp flags:ACK/ACK
ACCEPT all -- anywhere anywhere state ESTABLISHED
ACCEPT all -- anywhere anywhere state RELATED
ACCEPT udp -- anywhere anywhere udp dpt:domain
ACCEPT udp -- anywhere anywhere udp spt:domain dpts:1024:65535
ACCEPT tcp -- anywhere anywhere tcp dpt:ssh
ACCEPT tcp -- anywhere anywhere tcp dpt:smtp
ACCEPT tcp -- anywhere anywhere tcp dpt:www
ACCEPT tcp -- anywhere anywhere tcp dpt:auth
ACCEPT tcp -- anywhere anywhere tcp dpt:https
ACCEPT tcp -- anywhere anywhere tcp dpt:1723
ACCEPT gre -- anywhere anywhere
ACCEPT icmp -- anywhere anywhere icmp echo-reply
ACCEPT icmp -- anywhere anywhere icmp destination-unreachable
ACCEPT icmp -- anywhere anywhere icmp source-quench
ACCEPT icmp -- anywhere anywhere icmp time-exceeded
ACCEPT icmp -- anywhere anywhere icmp parameter-problem
ACCEPT icmp -- anywhere anywhere icmp echo-request
DROP tcp -- anywhere anywhere tcp dpts:nfs:2050
DROP tcp -- anywhere anywhere tcp dpts:x11:6063
DROP tcp -- anywhere anywhere tcp dpts:afs3-fileserver:7010

Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all -- 10.0.0.0/24 anywhere
ACCEPT all -- anywhere 10.0.0.0/24 state RELATED,ESTABLISHED

Chain OUTPUT (policy ACCEPT)
target prot opt source destination


I was hoping there was a way I could turn no some kind of logging and see what is going on. I'm sure it has something to do with gre (47) but as you can see it is set to ACCEPT:mad:

Thanks for your help in advance