Which network port does PPTP use for communication? 05/30/2017 – by Mod_GuideK 0 Which network port does PPTP use for communication? A. 1723/tcp B. 1723/udp C. 25/udp D. 25/tco SHOW ANSWERSCorrect Answer: A Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.