PPTP Protocol Overview: Features, Tunnel Initiation, and Security Issues

Question 1

What is the Point-to-Point Tunneling Protocol (PPTP)?

Accepted Answer

A method for implementing virtual private networks

Question 2

Which TCP port is used to initiate a PPTP tunnel?

Accepted Answer

Port 1723

Question 3

What security vulnerabilities have been found in PPTP?

Accepted Answer

Vulnerabilities in the underlying PPP authentication protocols