PortMapper

nice link that explain, how the portmap-daemon works.

http://www.linuxfibel.de/rpc.htm (german)

A smal and freel port-mapper for Windows: http://www.kmint21.com/free/port-map.zip

Alcatel Portmapper: http://www.xs4all.nl/~bmborsje/apm/

FreeBSD: The portmap command appeared in BSD 4.3 .

SYNOPSIS

   portmap [-d] [-v] [-h bindip]

http://www.gsp.com/cgi-bin/man.cgi?section=8&topic=portmap

using NFS on Linux:

Q: Can I have NFS? A: apt-get install nfs-common nfs-kernel-server (you need portmapper/rpc running to make nfs work)

  (rpcinfo -p localhost)
  SERVER
  /etc/exports
  directory       client(option1,option2)
  exmaple:
  /tmp            172.16.1.*(ro,root_squash)
  exportfs
  (and /etc/init.d/nfs-kernel-server start)
  CLIENT
  mount servernameorip:/dir /mountpoint
  /etc/fstab
  servernameorip:/dir /mnt nfs rw,hard,intr 0 0
  showmount -e nfsserver

The portmapper is used by things like NFS and NIS. If you don't use those then you're safe not running it.

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