The Well Known Ports are those from 0 through 1023. 



Port   Protokoll

0      Reserved               
1      ICMP Internet Control Message, TCP Port Service Multiplexer
2      IGMP Internet Group Management
3      Compression Process
4      Unassigned
5      Remote Job Entry
6      Unassigned               
7      Echo 
8      Unassigned
9      discard 
10     Unassigned
11     Active Users
12     Unassigned
13     Daytime
17     Quote of the Day
19     Character Generator
20     File Transfer [Default Data]
21     File Transfer [Control]
23     Telnet
37     Timeserver
43     Who Is
53     Domain Name Server
63     whois++
66     Oracle SQL*NET
70     Gopher
79     Finger
80     World Wide Web HTTP
88     Kerberos
101    NIC Host Name Server
105    Mailbox Name Nameserver
106    3COM-TSMUX
107    Remote Telnet Service
108    SNA Gateway Access Server
109    Post Office Protocol - Version 2
110    Post Office Protocol - Version 3
111    SUN Remote Procedure Call
113    Authentication Service
115    Simple File Transfer Protocol
118    SQL Services
119    Network News Transfer Protocol
123    Network Time Protocol
129    Password Generator Protocol
130    cisco FNATIVE
131    cisco TNATIVE
132    cisco SYSMAINT
133    Statistics Service
135    RPC Redirector, DCE endpoint resolution
137    NETBIOS Name Service    
138    NETBIOS Datagram Service
139    NETBIOS Session Service
143    Internet Message Access Protocol Imap2
144    NewS
150    SQL-NET                    
156    SQL Service                  
158    PCMail Server                 
159    NSS-Routing                  
161    SNMP
169    SEND                              
190    Gateway Access Control Protocol
200    IBM System Resource Controller
201    AppleTalk Routing Maintenance       
202    AppleTalk Name Binding  
204    AppleTalk Echo    
206    AppleTalk Zone Information                                        
213    IPX                                
280    http-mgmt
385    IBM Application
389    Lightweight Directory Access Protocol
396    Novell Netware over IP
445    Microsoft-DS

512    used by mail system To notify users
       of New mail received; currently
       receives messages only from 
       processes on the same machine

513    remote login a la telnet;
       automatic authentication performed
       based on priviledged port numbers
       And distributed Data bases which
       identify "authentication domains"

513    maintains Data bases showing who's
       logged in To machines on a Local 
       net And the load average of the
       machine

514    cmd
       like exec, but automatic authentication 
       is performed as For login server

546    DHCPv6 Client
547    DHCPv6 Server
563    nntp protocol over TLS/SSL (was snntp)
565    whoami
567    banyan-rpc
580    SNTP HEARTBEAT
585    IMAP4+SSL (use 993 instead)
586    Password Change
600    Sun IPC server
666    doom Id Software
749    kerberos administration
989    ftp protocol, Data, over TLS/SSL
990    ftp protocol, control, over TLS/SSL
992    telnet protocol over TLS/SSL
993    imap4 protocol over TLS/SSL
994    irc protocol over TLS/SSL
995    pop3 protocol over TLS/SSL (was spop3)


The Registered Ports are those from 1024 through 49151 


1024   Reserved             
1025   network blackjack
1027   ICQ
1030   BBN IAD
1031   BBN IAD
1032   BBN IAD


The Dynamic And/Or Private Ports are those from 49152 through 65535 