Identifies the port number of a destination application program.
Information used are the source port number, the destination port number and ip addresses.
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The client process needs a temporary port number. It tells the server to which port to reply (the TCP or UDP header includes information about the source and the destination port). The client, on the other hand, doesn't know in advance what port the server uses - unless the server uses a standard port number.The client process needs a temporary port number. It tells the server to which port to reply (the TCP or UDP header includes information about the source and the destination port). The client, on the other hand, doesn't know in advance what port the server uses - unless the server uses a standard port number.The client process needs a temporary port number. It tells the server to which port to reply (the TCP or UDP header includes information about the source and the destination port). The client, on the other hand, doesn't know in advance what port the server uses - unless the server uses a standard port number.The client process needs a temporary port number. It tells the server to which port to reply (the TCP or UDP header includes information about the source and the destination port). The client, on the other hand, doesn't know in advance what port the server uses - unless the server uses a standard port number.
A socket is distinguished by a combination of IP address and port number - both for the origin and for the destination. So, two connections will be different connections, if any of these are different.A socket is distinguished by a combination of IP address and port number - both for the origin and for the destination. So, two connections will be different connections, if any of these are different.A socket is distinguished by a combination of IP address and port number - both for the origin and for the destination. So, two connections will be different connections, if any of these are different.A socket is distinguished by a combination of IP address and port number - both for the origin and for the destination. So, two connections will be different connections, if any of these are different.
DHCP is a layer-4 protocol, most commonly transported over UDP. UDP port number 67 is the destination port of a server, and UDP port number 68 is used by the client
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Port 2
A port number is linked to an IP address to create a unique identification number for each process being run by a client. Port numbers do not have to be unique, but IP addresses do.
These can be used in order to check which connections are active. It is possible to create a socket by using a known port number.
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