IP Address Finder

What is Port number ?

The port number is a 16 bit binary number in the TCP. Therefore the port number is in the range of 0-65535.The port numbers are divided into three ranges.

• Well Known ports.
• Registered Ports.
• Dynamic Ports/Ephemeral ports

Well known Ports

The port numbers ranging from 0-1023.They are assigned to standard server processes such as FTP, Telnet. The numbers are assigned by IANA

Port	Protocol	Description
7	Echo	Echoes a received datagram back to the sender.
9	Discard	Discards any datagram that is received
11	Users	Active user
13	Daytime	Returns the data and the time
17	Quote	Returns a quote of the day
19	Chargen	Returns a string of characters
20	FTP, Data	File Transfer Protocol(data connection)
21	FTP, Control	File Transfer Protocol(Control connection)
23	TELNET	Terminal Network
25	SMTO	Simple Mail Transfer Protocol
53	DNS	Domain Name Server
67	BOOTP	Bootstrap Protocol
79	Finger	Finger
80	HTTP	Hypertext Transfer Protocol
111	RPC	Remote Procedure Call

Registered Ports
The ports ranging from 1024 - 49151 are to be registered with IANA to prevent duplicating. They can be used for proprietary server processors or nay client process.

Dynamic Ports
The ports numbers from 49152 – 65535 are dynamic or ephemeral ports. It can be frequently used. Normally they are used by client process temporarily. The client process need not have a fixed port number. For example a client can access the server with client port number 50000. after terminating that connection, if the client need to make a connection with server again, the second time client can arbitrarily select port number 65004.

IP Address? IP Number? Static IP Address? Port Number MAC Address

Dynamic IP Address? Private IP Address? Public IP Address? DHCP Host Name

ISP? TCP/IP? IP version (IPv4) VPN DNS

© 2008, Pra Internet Solutions All Rights Reserved. email:- admin@ipaddressfinder.info