Ports
Apart from its home platform OpenBSD, PF is also installed by default in FreeBSD starting with version 5.3, in NetBSD from version 3.0, and appeared in DragonFly BSD from version 1.2. Core force, a firewalling and security product for Microsoft Windows, is derived from PF. PF is also included in Mac OS X Lion (OS X 10.7), released in July 2011.
Read more about this topic: PF (firewall)
Famous quotes containing the word ports:
“When its errands are noble and adequate, a steamboat bridging the Atlantic between Old and New England, and arriving at its ports with the punctuality of a planet, is a step of man into harmony with nature.”
—Ralph Waldo Emerson (1803–1882)
“All places that the eye of heaven visits
Are to a wise man ports and happy havens.”
—William Shakespeare (1564–1616)
“It is true, we are such poor navigators that our thoughts, for the most part, stand off and on upon a harborless coast, are conversant only with the bights of the bays of poesy, or steer for the public ports of entry, and go into the dry docks of science, where they merely refit for this world, and no natural currents concur to individualize them.”
—Henry David Thoreau (1817–1862)