How to enable a Vagrant/VirtualBox virtual machine & NFS by rules in host machine UFW firewall? (vagrant up freezes at NFS mounting)

Question

When running vagrant up, it gets stuck at the point when it's trying to mount the NFS shared folders.

https://github.com/hashicorp/vagrant/blob/f2960d545864e1b644fe7fb0f3b82fec9895dd13/website/content/docs/synced-folders/nfs.mdx#L272 mentions to ensure firewall isn't blocking NFS towards the end, but doesn't specify how to allow it in the firewall.

Workaround: Use rsync rather than NFS.

Answer: here

Answer 1

rpcinfo -p lists ports so I found a different TCP one than I thought for the mount daemon for v4.

This works:

for i in 111 2049 42089; do sudo ufw allow from 192.168.0.0/16 to any port $i comment "NFS for VM"; done