Hi suzie005, there are a few types of ICMP that you allow and a few that you don't allow through a firewall.
In this case though I would suggest your friend allows them as they know it is from you.
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation technologies coming to Siggraph 2017
iPad Pro 12.9 vs Surface Pro 5
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.