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SEE OUR COMPUTER GLOSSARY!!

 

 

COMMON TCP/IP SOCKET NUMBERS

SERVICE NAME

NUMBER

COMMENT

FTP

21

FILE TRANSFER PROTOCOL

TELNET

23

LOGIN SERVICE FOR UNIX, SOMETIMES NT OR NOVELL

SMTP

23

INTERNET-STYLE SERVER-TO-SERVER E-MAIL

DOMAIN

53

DNS  SERVICES (UDP AND TCP)

GOPHER

70

INTERNET GOPHER

HTTP

80

HYPERTEXT TRANSFER PROTOCOL (WEB)

POP2

109

POST OFFICE PROTOCOL VERSION 2 (USER E-MAIL)

POP3

110

POST OFFICE PROTOCOL VERSION 3 (USER EMAIL)

NNTP

119

USENET NEWS

NETBIOS-NS

137

NETBIOS NAME SERVICE

NETBIOS-DGM

138

NETBIOS “DATAGRAM” SERVICE

NETBIOS-SSN

139

NETBIOS “SESSION” SERVICE

IMAP

143

INTERACTIVE MAIL ACCESS PROTOCOL (USER E-MAIL)

SHELL

514

“RLOGIN” SOCKET - UNIX OR NT

PRINTER

515

LINE PRINTER DAEMON - NETWORK PRINTING FOR UNIX

SOCKS

1080

SOCKS PROXY SERVER (SOX 4 AND SOCKS 5)

CLICK HERE FOR THE COMPLETE IANA LIST OF PORTS 1 THROUGH 65,535

UTILITY

FUNCTION

 

PING + host or IP

USED TO CHECK THE CONNECTIVITY BETWEEN TWO HOSTS; USES ICMP MESSAGES FOR RESPONSE

 

ROUTE + host or IP

DISPLAYS THE ROUTING TABLE ON A COMPUTER

 

TRACERT + host or IP

TRACES THE PATH A PACKET TAKES THROUGH THE NETWORK HOP BY HOP (WINDOWS)

 

TRACEROUTE + host or IP

FOR UNIX

 

NETSTAT

DISPLAYS IP INFORMATION FOR A COOMPUTER INCLUDING CONNECTED SESSIONS.  VERY IMPORTANT

 

NBSTAT

DISPLAYS NETBIOS OVER TCP/IP SETTINGS, USE -R TO RELOAD NETBIOS CACHE

 

IPCONFIG

DISPLAYS THE IP CONFIGURATION FOR A COMPUTER.  USED TO RELEASE A DHCP LEASE.

 

ARP

DISPLAYS OR MODIFIED THE ARP CACHE ON A COMPUTER.

 

IPCONFIG

SHOWS UNIX NETWORK TCP/IP CONFIGURATION

 

IPCONFIG

SHOWS WINDOWS NT TYPE TCP/IP CONFIGURATION

 

WINIPCFG

SHOWS WINDOWS 9x TCP/IP CONFIGURATION

 

TELNET + hostname

CHECKS A TCP SERVICE TO SEE IF IT’S AVAILABLE

 

ETHSTAT

SHOWS ETHERNET STATISTICS (SOME UNIX)

 

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