You are configuring a Windows Server 2016 VPN server using L2TP and NAT. Which of the following is one of the ports that needs to be opened on the firewall for this configuration to work?
A) 1723/TCP
B) 443/TCP
C) 500/TCP
D) 1701/TCP

Question

Quizplus · Accepted Answer

When using L2TP and NAT, port 1701/TCP needs to be opened on the firewall for the configuration to work. The other ports listed—1723/TCP, 443/TCP, and 500/TCP—are used for other VPN protocols such as PPTP and IKEv2, but not L2TP.

You Are Configuring a Windows Server 2016 VPN Server Using