Firewall Configuration

For most deployments there is no need to add firewall rules to block the standard storage services like NFS, CIFS, iSCSI. That said, for systems with ports that are facing public networks it is useful to block services that are not being used.

Blocking NFS

If you're not using Network Shares with NFS you can block NFS service access like so:

touch /etc/init.d/iptables.blocknfs
service iptables restart