Answer Posted / gattu sai krishna

Port numbers

The Total Port numbers are 6,536 i.e 0 - 6,535
In this 0 - 1023 are called as Reversed ports or sever ports
In this 1024 - 6,535 are called as Open Ports or Client Ports.

To communicate with the sever ,we reqiured port numbers is Must.


Some of port numbers are:

Tcp 7 port number
Udp 17 port number
Http 80 Port number
Smtp 25 port number
Dns 53 port number
Dhcp 69 port number
Telnet 23 port number
Ftp 21 port number, etc..........................
0 null port number

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