Which security group rule is required for EFS?
TCP port 2049 inbound.
Specifically, you must add an Inbound Rule to the EFS Mount Target's Security Group that allows TCP traffic on Port 2049 originating from your EC2 Instance's Security Group.
Specifically, you must add an Inbound Rule to the EFS Mount Target's Security Group that allows TCP traffic on Port 2049 originating from your EC2 Instance's Security Group.
