What are the limitations of PPTP in pfSense¶
PPTP in general has many limitations, especially from a security standpoint. It should not be used no matter how strongly a client pushes to have it enabled.
There are limitations of PPTP in pfSense, due to limitations in the NAT
Only one client can connect to a given PPTP server on the Internet simultaneously. 10 clients can connect to 10 different servers, but only a single simultaneous connection can exist to a single remote server.