Private Port

Private Port




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Private Port


Contents
β€Ί
Chapter 6 – Transportation Terminals
β€Ί
6.3 – Port Terminals
β€Ί
Public and Private Roles in Port Management

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Dr. Jean-Paul Rodrigue, Professor of Geography at Hofstra University. His research interests cover transportation and economics as they relate to logistics and global freight distribution. Specific topics include maritime transport systems, global supply chains, gateways and transport corridors.

Copyright Β© 1998-2022, Dr. Jean-Paul Rodrigue, Dept. of Global Studies & Geography, Hofstra University, New York, USA.


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The spatial organization of transportation and mobility
Source: adapted from The World Bank (2007) Port Reform Toolkit, Second Edition.
There are five main port management models based on the respective responsibility of the public and private sectors. They include the public service port, the tool port, the landlord port, the corporatized port, and the private service port. Each of these models concerns ports with different characteristics concerning the ownership of infrastructure, equipment, terminal operation, and who provides port services such as pilotage and towage. While service and tool ports primarily promote public interests, landlord ports attempt to balance public and private interests. At the other end of the spectrum, private service ports are maximizing the interests of their shareholders.

The Geography of Transport Systems FIFTH EDITION
Jean-Paul Rodrigue (2020), New York: Routledge, 456 pages. ISBN 978-0-367-36463-2






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In setting up port forwarding on an AirPort Extreme n, I've discovered terminology I'm not familiar with. There are both "Public" and "Private" TCP & UDP port fields.

I understand the difference between TCP & UDP, but I don't get the Public vs. Private thing. Is one incoming and the other outgoing? If so, then which is which? If not, then what are they?

Additionally, when an app Just says, "UDP 407 & TCP 407, 1417-1420" like Timbuktu does, then what most likley do they mean? Do they mean Public, Private, or both?

Many thanks!


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The "public" port is the port which appears on the Internet side. When remotely connecting you will use that port.

The "private" port is the port used to connect to the device on your LAN.

If you wanted to host a web page your computer would default to using port 80. However some ISPs block port 80. So you would use a different public port to bypass the ISP's block. For instance you could configure port forwarding to use a public port of 8080 but a private port of 80. Then from the Internet you would use
http://yourPublicIPAddress:8080 to access your web server.








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Duane,

Thanks for the answer! If I may ask another then?

If I have an app that's only accessible from within my LAN (iTunes & iPhoto to allow sharing), then I'd only need to open the private ports, correct?








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There is still some misunderstanding...

If your service is using port 548 for example, when you configure port forwarding through the AirPort Extreme base station (AEBS) you would use:

Public port: 548
IP address: IP address of device providing the service
Private port: 548

If your ISP is blocking port 548 you might decide to use port 1548. In that case you would use:

Public port: 1548
IP address: IP address of device providing the service
Private port: 548








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I got you. Thank you very much for your help!

Jim








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Question:
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Difference Between Public and Private Ports?

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