Here’s the Answer to the Question posted on Facebook
Q. A network administrator needs to open a port on a firewall to support a VPN using PPTP. What ports should the administrator open?
A. UDP 47
B. TCP 50
C. TCP 1723
D. UDP 1721
Answer available until September 24, 2016.
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See Chapters 3 and 4 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide.