Blocked GRE when connected via PPTP VPN
I have a quick question.
When I connect with a client behind the pfsense to a VPN Server via PPTP I see that a GRE packet is blocked by the firewall.
The VPN connection is working properly.
I have no additonal rules in place so I think it´s the default rule.
Now my question: Should I create a rule to let the GRE packets in?
If the VPN connection is working properly, this can probably be safely ignored. It may be that the server side is sending a GRE packet before the GRE state is active, but if the connection works normally after that log entry, I wouldn't worry about it.