The portmapper assigns each NFS service to a port dynamically at service startup time. How do I allow legitimate NFS clients to access the NFS server using RHEL / Fedora / CentOS Linux 5.x iptables firewall?
Q. How do I install and configure NFS 4 Server under Ubuntu Linux ?
A. In order to set NFS server you need to install the following packages:
=> nfs-kernel-server – Linux NFS Server
=> nfs-common – NFS Common programs
=> portmap – The RPC portmapper