Basic and XSS Summary for ports

Recognized ports are also known as common ports, with a port number of 0-1023, and they are tightly bound to special services and can no longer redefine his object. So Remote Desktop Connection can modify the port number. , Port 23rd Telnet Service is dedicated, 25 port is SMTP (mail) service, 135 port to RPC (Remote Call service), these ports are usually not called by the hacker program.

Register ports, port number is 1024-49151, they loosely bound with some services, these ports do not have a clear definition of objects, different programs can be defined according to their own needs, these ports are very useful in the protection of Trojan horse programs and Avira.

Dynamic and/or private ports, 49152-65535, common services theoretically will not be allocated on these ports, the hacker long like to use these ports, will not attract attention.

The above is broken down by the port number.

The following are classified by protocol type, divided into "TCP port" and "UDP port", generally directly with the receiver directly connected to the adoption of the TCP protocol. Just publish the information online without worrying about whether or not to reach the receiver by using the UDP protocol.

Common ports using the TCP protocol:
1.FTP Protocol Port
2.telnet protocol port. A port for remote login, the user can remotely log on to the computer according to their own identity, through which a DOS mode-based communication service can be provided. The BBS server, which supports the plain character interface, will open port 23 to provide services externally.
3.SMTP Protocol Port
4.POP3 protocol Port: The POP3 protocol is used to receive mail, usually using port 110, as long as there is a corresponding program using the POP3 protocol to receive mail. such as 126 website into the mailbox

Common ports using the UDP protocol:
1.http Protocol Port
2.DNS protocol port, Port 53rd
3.SNMP Port: Simple Network Management Protocol, which is used to manage network devices, Port 161th.
4.QQ protocol port. With the UDP protocol, the QQ server listens on port No. 8000 and the client port number No. 4000.

Today in the snow to see a summary of the XSS, write very good, although some did not read it, to everyone share!!

Links: http://bbs.pediy.com/showthread.php?t=196518

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Basic and XSS Summary for ports