from Wikipedia, the free encyclopedia
This is a list of the most important protocols and services based on TCP / IP for the Internet and local computer networks ( LANs ). The individual services are classified according to their purpose or area of responsibility.
A single service is listed with the following data:
Number of the TCP (or UDP ) port on which the service works in the standard setting
Abbreviation of the service
Full name of the service
Explanation
Administrative logs
43
Whois
Who is
Provides administrative and technical information about a domain and its owner.
53 (UDP / TCP)
DNS
Domain Name System
Resolves host names on the Internet into IP addresses .
67 + 68 (UDP)
BOOTP
Bootstrap Protocol
Enables computers without a hard drive to be booted over the network.
546 + 547 (UDP)
DHCP
Dynamic Host Configuration Protocol
Provides a computer with a dynamically assigned IP address and other network-relevant data.
1701 (UDP / TCP)
L2TP
Layer 2 tunneling protocol
Allows you to establish a VPN connection.
File transfer
20 + 21
FTP
File Transfer Protocol
Used to exchange files (in both directions) with an FTP server.
22nd
SFTP
SSH File Transfer Protocol
Used for the encrypted exchange (in both directions) of files with an SSH & FTP server.
69 (UDP)
TFTP
Trivial File Transfer Protocol
Slimmed down version of FTP (see above).
989 + 990
FTPS
File Transfer Protocol over TLS / SSL
Variant of FTP (see above) that sends and receives data via an encrypted channel.
1352
Lotus Notes
Lotus Notes / Domino
Used for access with Lotus Notes clients to the Lotus Domino server
1433 + 1434
MS-SQL
Microsoft SQL Server
Used to access Microsoft SQL Server via query and management software .
1521
OracleNet
Oracle Net
Used to access Oracle database servers via query and management software .
3306
MySQL
MySQL server
Used to access MySQL database servers via query and management software.
3050
gds_db
Firebird SQL Server
Used to access Firebird database servers via query and management software.
3050
gds_db
Interbase SQL Server
Used to access Interbase database servers via query and management software.
5432
PostgreSQL
PostgreSQL server
Used to access PostgreSQL database servers via query and management software.
25th
SMTP
Simple Mail Transfer Protocol
Sending e-mails via mail server .
110
POP3
Post Office Protocol ver. 3
Collection of emails from a mail server.
143
IMAP
Internet Message Access Protocol
Access to emails stored on a mail server.
465
SMTPS
Simple Mail Transfer Protocol over TLS / SSL
Variant of SMTP (see above) that uses an encrypted channel ( SSL ) to the mail server. (outdated)
587
SMTP
Simple Mail Transfer Protocol
SMTP (see above) for customer email programs . Enables encrypted transmission and identification of the sender.
993
IMAPS
Internet Message Access Protocol over TLS / SSL
Variant of IMAP (see above), which uses an encrypted channel (SSL) to the mail server.
995
POP3S
Post Office Protocol ver. 3 over TLS / SSL
Variant of POP3 (see above), which downloads mails from the mail server via an encrypted channel (SSL).
22nd
SSH
Secure Shell
Allows direct access to the operating system shell of another computer via an encrypted channel.
23
Telnet
Telnet
Allows direct access to the operating system shell of another computer. The transmitted data is not encrypted and the user is authenticated with a user name and password (in clear text).
24
RLogin
Remote login
Works in a similar way to Telnet (see above), but the authentication can alternatively also be carried out using the IP address and the source port of the accessing computer.
3389
RDP
Microsoft Remote Desktop
Display and control of the screen content (desktop) of remote computers.
5900
VNC
Remote desktop
Display and control of the screen content (desktop) of remote computers.
6000
X
X Window Server
Communication between the application and the graphic display server under most Unices, enables applications to be easily displayed on another computer
119
NNTP
Network News Transfer Protocol
Used to access newsgroups via a news server.
563
NNTPS
Network News Transfer Protocol over TLS / SSL
Variant of NNTP (see above), accesses newsgroups via an encrypted channel.
80
HTTP
Hypertext Transfer Protocol
Used to download files (mostly HTML documents) from a web server.
443
HTTPS
Hypertext Transfer Protocol over TLS / SSL
Variant of HTTP (see above) that downloads files via an encrypted channel.
123 (UDP)
NTP
Network Time Protocol
Downloads the current time from an NTP server (which is usually connected to a radio clock or atomic clock ).
See also
Web links
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