what is port in linux-networking?

Same as in any other networking.

2 members found this post helpful.

sorry pressed wrong button acka helpful or not.

Wikipedia has an article about this. I also found one at About.com.

It's across from starboard...

Come on now, can you really not search google or wiki for networking port ?

Hi,

We made it easy for you using google; try now and read it at;---> http://en.wikipedia.org/wiki/Port_number

When explaining IP addresses and Ports I use the analogy of a house address and physical mail. The IP address is the house address, and think of ports as different letterbox slots in the door. Depending on what type of post is being delivered it goes in a different letterbox slot, or port.

So one address has many ports - each port for a different type of package. So, there would be one for mail (port 25), one for web browsing (port 80), one for secure web browsing (port 443), etc.

thnx for d rply
dis is useful 2 me
cu

A port is a location on a coast or shore containing one or more harbors where ships can dock and transfer people or cargo to or from land. Port locations are selected to optimize access to land and navigable water, for commercial demand, and for shelter from wind and waves. Ports with deeper water are rarer, but can handle larger, more economical ships. Since ports throughout history handled every kind of traffic, support and storage facilities vary widely, may extend for miles, and dominate the local economy. Some ports have an important, perhaps exclusively military role.

Distribution

Ports often have cargo-handling equipment, such as cranes (operated by longshoremen) and forklifts for use in loading ships, which may be provided by private interests or public bodies. Often, canneries or other processing facilities will be located nearby. Some ports feature canals, which allow ships further movement inland. Access to intermodal transportation, such as trains and trucks, are critical to a port, so that passengers and cargo can also move further inland beyond the port area. Ports with international traffic have customs facilities. Harbour pilots and tugboats may maneuver large ships in tight quarters when near docks.

The terms "port" and "seaport" are used for different types of port facilities that handle ocean-going vessels, and river port is used for river traffic, such as barges and other shallow-draft vessels. Some ports on a lake, river, or canal have access to a sea or ocean, and are sometimes called "inland ports".

A fishing port is a port or harbor facility for landing and distributing fish. It may be a recreational facility, but it is usually commercial. A fishing port is the only port that depends on an ocean product, and depletion of fish may cause a fishing port to be uneconomical. In recent decades, regulations to save fishing stock may limit the use of a fishing port, perhaps effectively closing it.

A "dry port" is a term sometimes used to describe a yard used to place containers or conventional bulk cargo, usually connected to a seaport by rail or road.

A warm water port is where the water does not freeze in winter time. Because they are available year-round, warm water ports can be of great geopolitical or economic interest.

A seaport is further categorized as a "cruise port" or a "cargo port". Additionally, "cruise ports" are also known as a "home port" or a "port of call". The "cargo port" is also further categorized into a "bulk" or "break bulk port" or as a "container port".

A cruise home port is the port where cruise-ship passengers board (or embark) to start their cruise and also debark (or disembark) the cruise ship at the end of their cruise. It is also where the cruise ship's supplies are loaded for the cruise, which includes everything from fresh water and fuel to fruits, vegetable, champagne, and any other supplies needed for the cruise. "Cruise home ports" are a very busy place during the day the cruise ship is in port, because off-going passengers debark their baggage and on-coming passengers board the ship in addition to all the supplies being loaded. Currently, the Cruise Capital of the World is the Port of Miami, Florida, closely followed behind by Port Everglades, Florida and the Port of San Juan, Puerto Rico.

A port of call is an intermediate stop for a ship on its sailing itinerary, which may include up to half a dozen ports. At these ports, a cargo ship may take on supplies or fuel, as well as unloading and loading cargo. But for a cruise ship, it is their premier stop where the cruise lines take on passengers to enjoy their vacation.
Cargo port in Hilo, Hawaii

Cargo ports, on the other hand, are quite different from cruise ports, because each handles very different cargo, which has to be loaded and unloaded by very different mechanical means. The port may handle one particular type of cargo or it may handle numerous cargoes, such as grains, liquid fuels, liquid chemicals, wood, automobiles, etc. Such ports are known as the "bulk" or "break bulk ports". Those ports that handle containerized cargo are known as container ports. Most cargo ports handle all sorts of cargo, but some ports are very specific as to what cargo they handle. Additionally, the individual cargo ports are divided into different operating terminals which handle the different cargoes, and are operated by different companies, also known as terminal operators or stevedores.

Ports sometimes fall out of use. Rye, East Sussex was an important English port in the Middle Ages, but the coastline changed and it is now 2 miles (3.2 km) from the sea, while the ports of Ravenspurn and Dunwich have been lost to coastal erosion. Also in the United Kingdom, London, the River Thames was once an important international port, but changes in shipping methods, such as the use of containers and larger ships, put it at a disadvantage.

0 members found this post helpful.

Hi tailinlinux

See post no.1 properly its clearly mentioned what is port in linux-networking?

i see

try to search in google

0 members found this post helpful.

hope this one work

http://www.linuxhomenetworking.com/w...Using_iptables

0 members found this post helpful.

This kind of text speak nonsense is against the rules here at linuxquestions; please don't do it again.

to be thankful to someone is not against any rule.
i dont know how using bad words like 'nonsense' can allowed in linuxquestions.

Hi Deepak,

You wrote sms kind of language here:
That text is not allowed.
You were not scolded for thanking but using short cuts.
Grow Up!
Before posting read this :

http://www.linuxquestions.org/questi...osting-356388/