Advice in General

I currently doing the VPN Basic and that I must do six times so far that question

  1. What protocol does the pre-configured rule on the WAN interface of the Site-A and Site-B firewalls allow?

Every time I put the answer IPv4 it saying it wrong I’m missing something here?

Hi. Have you managed to complete it?
When you look at the IPv4, there is also another protocol. Use that instead of IPv4

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