Well-Known TCP/UDP Ports 0 to 1023
Port #    Portocol               Description         Status
0              TCP, UDP             Reserved; do not use (but is a permissible source port value if the sending process does not expect messages in response)    Offical
1              TCP, UDP             TCPMUX              Offical
5              TCP, UDP             RJE (Remote Job Entry)  Offical
7              TCP, UDP             ECHO protocol   Offical
9              TCP, UDP             DISCARD protocol            Offical
11           TCP, UDP             SYSTAT protocol               Offical
13           TCP, UDP             DAYTIME protocol            Offical
17           TCP, UDP             QOTD (Quote of the Day) protocol            Offical
18           TCP, UDP             Message Send Protocol Offical
19           TCP, UDP             CHARGEN (Character Generator) protocol            Offical
20           TCP        FTP Protocol (data) - port for transferring FTP data            Offical
21           TCP        FTP Protocol (control) - port for FTP commands and flow control Offical
22           TCP, UDP             SSH (Secure Shell) - used for secure logins, file transfers (scp, sftp) and port forwarding                Offical
23           TCP, UDP             Telnet protocol - unencrypted text communication, remote login service Offical
25           TCP, UDP             SMTP (Simple Mail Transport Protocol) - used for email routing between email servers                Offical
26           TCP, UDP             RSFTP - A simple FTP-like protocol            Unoffical
35           TCP, UDP             QMS Magicolor 2 printer              Unoffical
37           TCP, UDP             TIME protocol    Offical
38           TCP, UDP             Route Access Protocol    Offical
39           TCP, UDP             Resource Location Protocol         Offical
41           TCP, UDP             Graphics              Offical
42           TCP, UDP             Host Name Server/WINS Replications     Offical
43           TCP        WHOIS protocol                Offical
49           TCP, UDP             TACACS Login Host protocol        Offical
53           TCP, UDP             DNS (Domain Name System)       Offical
57           TCP        MTP, Mail Transfer Protocol        Offical
67           UDP       BOOTP (BootStrap Protocol) server; also used by DHCP (Dynamic Host Configuration Protocol)                Offical
68           UDP       BOOTP (BootStrap Protocol) client; also used by DHCP (Dynamic Host Configuration Protocol)                Offical
69           UDP       TFTP (Trivial File Transfer Protocol)          Offical
70           TCP        Gopher protocol               Offical
79           TCP        Finger protocol Offical
80           TCP        HTTP (HyperText Transfer Protocol) - used for transferring web pages      Offical
81           TCP        Torpark - Onion routing ORport Unoffical
82           UDP       Torpark - Control Port    Unoffical
88           TCP        Kerberos - authenticating agent Offical


101         TCP        HOSTNAME       
102         TCP        ISO-TSAP protocol/Microsoft Exchange 
107         TCP        Remote Telnet Service  
109         TCP        POP, Post Office Protocol, version 2        
110         TCP        POP3 (Post Office Protocol version 3) - used for retrieving emails                Offical
111         TCP, UDP             SUNRPC protocol            
113         TCP        Ident - old server identification system, still used by IRC servers to identify its users           Offical
115         TCP        SFTP, Simple File Transfer Protocol          
117         TCP        UUCP-PATH      
118         TCP, UDP             SQL Services       Offical
119         TCP        NNTP (Network News Transfer Protocol) - used for retrieving newsgroups messages         Offical
123         UDP       NTP (Network Time Protocol) - used for time synchronization      Offical
135         TCP, UDP             EPMAP / Microsoft RPC Locator Service Offical
137         TCP, UDP             NetBIOS NetBIOS Name Service Offical
138         TCP, UDP             NetBIOS NetBIOS Datagram Service         Offical
139         TCP, UDP             NetBIOS NetBIOS Session Service             Offical
143         TCP, UDP             IMAP4 (Internet Message Access Protocol 4) - used for retrieving emails Offical
152         TCP, UDP             BFTP, Background File Transfer Program
153         TCP, UDP             SGMP, Simple Gateway Monitoring Protocol       
156         TCP, UDP             SQL Service         Offical
157         TCP, UDP             KNET VM Command Message Protocol  
158         TCP, UDP             DMSP, Distributed Mail Service Protocol
159         TCP, UDP             NSS-Routing      
160         TCP, UDP             SGMP-TRAPS    
161         TCP, UDP             SNMP (Simple Network Management Protocol) Offical
162         TCP, UDP             SNMPTRAP         Offical
170         TCP        Print-srv              
179         TCP        BGP (Border Gateway Protocol) - an exterior gateway routing protocol that enables groups of routers to share routing information to ensure efficient and loop-free routes can be established. BGP is commonly used within and between ISPs.           Offical
190         TCP, UDP             Gateway Access Control Protocol (GACP)             
191         TCP, UDP             Prospero Directory Service          
192         TCP, UDP             OSU Network Monitoring System, Apple AirPort Base Station PPP status or discovery, AirPort Admin Utility or Express Assistant            
192         TCP. UDP             SRMP (Spider Remote Monitoring Protocol)        
194         TCP        IRC (Internet Relay Chat)              Offical
201         TCP, UDP             AppleTalk Routing Maintenance
209         TCP, UDP             The Quick Mail Transfer Protocol              
213         TCP, UDP             IPX         Offical
218         TCP, UDP             MPP, Message Posting Protocol
220         TCP, UDP             IMAP, Interactive Mail AccessProtocol, version 3               
259         TCP, UDP             ESRO, Efficient Short Remote Operations             
264         TCP, UDP             BGMP, Border Gateway Multicast Protocol          
311         TCP        Apple Server-Admin-Tool, Workgroup-Manager-Tool      
318         TCP, UDP             TSP, Time Stamp Protocol            
323         TCP, UDP             IMMP, Internet Message Mapping Protocol        
383

TCP, UDP             HP OpenView HTTPs Operations Agent 
366         TCP, UDP             SMTP, Simple Mail Transfer Protocol. On-Demand Mail Relay (ODMR)    
369         TCP, UDP             Rpc2portmap     Offical
371         TCP, UDP             ClearCase albd   Offical
384         TCP, UDP             A Remote Network Server System           
387         TCP, UDP             AURP, AppleTalk Update-Based Routing Protocol              
389         TCP, UDP             LDAP (Lightweight Directory Access Protocol)      Offical
401         TCP, UDP             UPS Uninterruptible Power Supply           Offical
411         TCP        Direct Connect Hub port              
Unoffical
427         TCP, UDP             SLP (Service Location Protocol)  Offical
443         TCP        HTTPS - HTTP Protocol over TLS/SSL (used for transferring web pages securely using encryption)                Offical
444         TCP, UDP             SNPP, Simple Network Paging Protocol  
445         TCP        Microsoft-DS (Active Directory, Windows shares, Sasser worm, Agobot, Zobotworm)        Offical
445         UDP       Microsoft-DS SMB file sharing     Offical
464         TCP, UDP             Kerberos Change/Set password Offical
465         TCP        SMTP over SSL - CONFLICT with registered Cisco protocol               Conflict


500         TCP, UDP             ISAKMP, IKE-Internet Key Exchange         Offical
512         TCP        exec, Remote Process Execution
512         UDP       comsat, together with biff: notifies users of new c.q. yet unread e-mail   
513         TCP        Login    
513         UDP       Who     
514         TCP        rsh protocol - used to execute non-interactive commandline commands on a remote system and see the screen return            
514         UDP       syslog protocol - used for system logging               Offical
515         TCP        Line Printer Daemon protocol - used in LPD printer servers          
517         TCP        Talk       
518         UDP       NTalk    
520         TCP        efs         
520         UDP       Routing - RIP      Offical
513         UDP       Router 
524         TCP, UDP             NCP (NetWare Core Protocol) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc.        Offical
525         UDP       Timed, Timeserver         
530         TCP, UDP             RPC        Offical
531         TCP, UDP             AOL Instant Messenger, IRC       
532         TCP        netnews             
533         UDP       netwall, For Emergency Broadcasts         
540         TCP        UUCP (Unix-to-Unix Copy Protocol)        
542         TCP, UDP             commerce (Commerce Applications)      
543         TCP        klogin, Kerberos login    
544         TCP        kshell, Kerberos Remote Shell   
546         TCP, UDP             DHCPv6 client   
547         TCP, UDP             DHCPv6 server 
548         TCP        AFP (Apple Filing Protocol)          
550         UDP       new-rwho, new-who     
554         TCP, UDP             RTSP (Real Time Streaming Protocol)       Offical
556         TCP        Remotefs, rfs, rfs_server             
560         UDP       rmonitor, Remote Monitor         
561         UDP       monitor               
561         TCP, UDP             chcmd  
563         TCP, UDP             NNTP protocol over TLS/SSL (NNTPS)      Offical
587         TCP        Email message submission (SMTP) (RFC 2476)     Offical
591         TCP        FileMaker 6.0 Web Sharing (HTTP Alternate, see port 80)               Offical
593         TCP, UDP             HTTP RPC Ep Map/Microsoft DCOM         Offical
604         TCP        TUNNEL              
631         TCP, UDP             IPP, Internet Printing Protocol   
636         TCP, UDP             LDAP over SSL (encrypted transmission) Offical
639         TCP, UDP             MSDP, Multicast Source Discovery Protocol         
646         TCP        LDP, Label Distribution Protocol
647         TCP        DHCP Failover Protocol 
648         TCP        RRP, Registry Registrar Protocol
652         TCP        DTCP, Dynamic Tunnel Configuration Protocol    
654         TCP        AODV, Ad hoc On-Demand Distance Vector         
665         TCP        sun-dr, Remote Dynamic Reconfiguration             Unoffical
666         UDP       Doom, First online FPS  
674         TCP        ACAP, Application Configuration Access Protocol               
691         TCP        Microsoft Exchange Routing        Offical
692         TCP        Hyperwave-ISP
695         TCP        IEEE-MMS-SSL  
698         TCP        OLSR, Optimized Link State Routing         
699         TCP        Access Network


700         TCP        EPP, Extensible Provisioning Protocol     
701         TCP        LMP, Link Management Protocol.            
702         TCP        IRIS over BEEP   
706         TCP        SILC, Secure Internet Live Conferencing
711         TCP        TDP, Tag Distribution Protocol   
712         TCP        TBRPF, Topology Broadcast based on Reverse-Path Forwarding 
720         TCP        SMQP, Simple Message Queue Protocol
749         TCP, UDP             kerberos-adm, Kerberos administration
750         UDP       Kerberos version IV        
782         TCP        Conserver serial-console management server    
829         TCP        CMP (Certificate Management Protocol)
860         TCP        iSCSI     
873         TCP        rsync - File synchronisation protocol        Offical
901         TCP        Samba Web Administration Tool (SWAT)               Unoffical
902                        VMware Server Unoffical
911         TCP        Network Console on Acid (NCA) - local tty redirection over OpenSSH       
981         TCP        SofaWare Technologies Remote HTTPS management for firewall devices running embedded Checkpoint Firewall-1 software Unoffical
989         TCP, UDP             FTP Protocol (data) over TLS/SSL               Offical
990         TCP, UDP             FTP Protocol (control) over TLS/SSL          Offical
991         TCP, UDP             NAS (Netnews Admin System)  
992         TCP, UDP             Telnet protocol over TLS/SSL       Offical
993         TCP        IMAP4 over SSL (encrypted transmission)             Offical
995         TCP        POP3 over SSL (encrypted transmission) Offical
                                                 
               
* Ports 0 to 1023 are Well-Known Ports.
*Ports 1024 to 49151 are Registered Ports (often registered by a software developer to designate a *particular port for their application)
*Ports 49152 to 65535 are Public Ports.