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Need help for RRAS VPN
Hello I created a RRAS VPN for my self on my laptop (win server 2019), my laptop is connected to the internet via Modem and i use a DDNS instead of static IP. i can connect to my home network w...
The Generic Route Encapsulation (GRE) protocol is used in conjunction with PPTP. Data or payload that is going to pass through the tunnel is given a Point-to-Point Protocol (PPP) header and then placed inside a GRE packet. The GRE packet carries the data between the two tunnel endpoints. After the GRE packet has arrived at the final destination (the endpoint of the tunnel), it is discarded and the encapsulated packet is then transmitted to its final destination.
So I'd check that your NAT device allows TCP port 1723 and GRE (IP protocol 47)
1723 and 47 are opened in port forwarding and NAT !