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Know about Ports

 

A port number is an application or process specific communication used by TCP and UDP protocol. Port is identified by using a number. Port numbers allow different application on the same computer to utilize network resources without interfering with each other.In networking, port numbers ranges from 0 to 65535.

Well Known Port Number

 

Port Number

 

Application

 

 

20, 21

 

FTP

23

 

TELNET

25

 

SMTP (Simple Mail Transfer Protocol)

53

 

DNS (Domain Naming System)

80

 

HTTP (Hypertext Transport Protocol)

110

 

POP3 (Post Office Protocol)

161

 

SNMP (Simple Network Management Protocol)

389

 

LDAP (Lightweight Directory Access Protocol)

443

 

HTTPS (Hypertext Transport Protocol Secured)

1293

 

IPSec (Internet Protocol Security)

1433

 

MSSQL Server

3899

 

RD (Remote Desktop)

3306

 

MYSQL Server

8080

 

Apache Tomcat

 

 

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