Which two network traffic options should you allow through the firewall?

You need to set up a VPN between AWS VPC and your on-premises network. You create a VPN connection in the AWS Management Console, download the configuration file, and install it on your on-premises router. The tunnel is not coming up because of firewall restrictions on your router.

Which two network traffic options should you allow through the firewall? (Select two.)
A . UDP port 500
B . IP protocol 50
C . IP protocol 5
D . TCP port 50
E . TCP port 500

Answer: AD

Explanation:

References: https://docs.aws.amazon.com/vpc/latest/userguide/VPC_VPN.html