ISC2 Exam ISSAP Topic 1 Question 10 Discussion

(PPTP) .

Point-to-Point Tunneling Protocol (PPTP) is a remote access protocol. It is an extension of the Point-to-Point Protocol (PPP). PPTP is used to

securely connect to a private network by a remote client using a public data network, such as the Internet. Virtual private networks (VPNs)

use the tunneling protocol to enable remote users to access corporate networks securely across the Internet. PPTP supports encapsulation of

encrypted packets in secure wrappers that can be transmitted over a TCP/IP connection.

Answer option B is incorrect. Secure Sockets Layer (SSL) uses TCP port 443 as the default port.

Answer option C is incorrect. TCP/UDP port 5060 is used for the Session Initiation Protocol (SIP).

Answer option A is incorrect. TCP port 110 is the default port for POP3.