It is a kind of standard. If both sides agree to use (for example) port 80 for HTTP (Web access), no special configuration, or specification of port number, is necessary. If non-standard ports are used, the client and the server have to agree on the port used. For example, if the server decides to use port 10080 for HTTP, the client has to know that this is the port to be used - and the user needs additional effort to acces that port, for example, by specifying the following address in the browser: http://www.sampleserver.com:10080
Ports in the range of 1024 to 49151 are known as "registered ports." These ports are assigned by the Internet Assigned Numbers Authority (IANA) for specific services and applications, allowing organizations to use them for their software without conflicting with well-known ports (0-1023). While registered ports are not as tightly controlled as well-known ports, they are still recommended for use by specific applications to ensure proper functioning and to avoid port conflicts.
The well-known or reserved ports are ports 0 - 1023.
Usual routers do not have such protection. But you can use router's firewall to protect some well known ports and attacks with well known patterns.
Well depending on what usb ports it has usb 3 ports are the best to use.
There's no possible answer to that. A computer can have any number of USB ports. As the above is true, it doesn't matter how many you use. You can use as much USB ports as you want on your computer.
The well-known traditional port for ssh is port 22.
0 to 1023 Ports
There are many well known ports around the world. Some of these include Port of Benoa, Port of Busan, and Cozumel.
A non-ephemeral port, also known as a well-known or registered port, is a port number that is typically reserved for specific services and applications. These ports range from 0 to 1023 for well-known ports and from 1024 to 49151 for registered ports. Unlike ephemeral ports, which are temporary and assigned dynamically for client-side connections, non-ephemeral ports are usually static and associated with server applications, such as HTTP (port 80) or FTP (port 21). They facilitate consistent communication between clients and servers.
0 to 1023
TCP ports can range from 0 to 65535. The well-known ports, which range from 0 to 1023, are typically reserved for specific services (e.g., HTTP uses port 80, HTTPS uses port 443). Ports ranging from 1024 to 49151 are known as registered ports and can be used by user applications. Ports from 49152 to 65535 are dynamic or private ports and are usually assigned temporarily for client source ports during communication.
Well Known