I am trying to mount my Elastic File System (EFS) on an EC2 instance in the same availability zone. However,
mount just hangs and eventually says
Connection timed out. The AWS docs say that I must configure my security groups to allow traffic on TCP 2049, the NFS port. However, even when I allow outbound 2049 traffic from the instance, inbound 2049 traffic on the EFS, and my Network ACLs allow inbound/outbound traffic on all ephemeral ports (TCP 1024-65535), I still cannot successfully mount the EFS.
I read on this post that NFS also uses ports TCP/UDP 111 and 1110. If so, why don't the AWS docs mention these ports, and what should my new Security Group / Network ACL rules be?