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Ports

By marlond ·
how are ports open and close on a host?

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by mshavrov In reply to Ports

What ports? There are different definitions of ports in the computer.

1. Physical ports. For example, printer port, USB port, serial port, etc. "Open" port means accessing device through the port.

2. I/O ports - hardware "internal" ports. It's device's physical address inside computer. For example, serial port COM1 has port address 3F8.

3. Software ports. For example, TCP/IP ports. "Open" TCP port means that computer has software which will answer to specifically formed request.

4. "Opening" and "closing" ports on firewall means enable or disable specific type of communication through firewall.

Would you be more specific in your question?

Good luck,

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by marlond In reply to

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by marlond In reply to Ports

Sorry, sorry, I meant TCP/IP ports on a computer and a firewall?

Thanks again!

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by JediMaster2003 In reply to Ports

By default all ports are open on a host, its at the Server or Gateway (router) that you can control those ports.

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by marlond In reply to

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by marlond In reply to Ports

How do I control does ports on the router or server?

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by Mark In reply to Ports

Typically you would control port access at the Router level. If you know the IP of your router, then put it in your browser address window. You may need a username and password. If you know what kind of router, they usually have set defaults that can be looked up. For instance, Linksys uses any username and admin for the pw. Netgear uses admin/password for the username/pw. You can control them at the PC level too, but that is usually not done because you may prevent the PC from functioning properly on the network, but if you give your OS I can point you there.

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by marlond In reply to

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by marlond In reply to Ports

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