PORT NUMBER AND THEIR USES
There are 65,535 Port Numbers of that 0-1023 are well known port numbers, 1024-49,151
are Registered 49,152-65,535 are Dynamic
or private ports.
Below are some of the well
known ports:-
Port Description
status
0/TCP,UDP
Reserved; do not use (but is
a permissible source port value)
1/TCP,UDP
TCPMUX (TCP
port service multiplexer) Official
5/TCP,UDP RJE (Remote Job Entry)
7/TCP,UDP
ECHO
protocol
9/TCP,UDP
DISCARD
protocol
11/TCP,UDP
SYSTAT
protocol
13/TCP,UDP DAYTIME protocol
17/TCP,UDP
QOTD
(Quote of the Day) protocol
18/TCP,UDP
Message
Send Protocol
19/TCP,UDP
CHARGEN
(Character Generator) protocol
20/TCP
FTP – Data
Port
21/TCP
FTP - Control
(command) port
22/TCP,UDP
SSH
(Secure Shell) - used for secure logins, file transfers (scp, sftp) and port
forwarding
23/TCP,UDP
Telnet
protocol - unencrypted text communications
25/TCP,UDP
SMTP Used for e-mail routing between mail-servers
E-mails
26/TCP,UDP
RSFT A
simple FTP-like protocol
35/TCP,UDP
QMS
Magicolor 2 printer
37/TCP,UDP
TIME
protocol
38/TCP,UDP
Route
Access Protocol
39/TCP,UDP
Resource
Location Protocol
41/TCP,UDP
Graphics
42/TCP,UDP
Host
Name Server
42/TCP,UDP
WINS
[1]
43/TCP
WHOIS
protocol
49/TCP,UDP TACACS
Login Host protocol
53/TCP,UDP
DNS
(Domain Name System)
57/TCP
MTP,
Mail Transfer Protocol
67/UDP
BOOTP
(BootStrap Protocol) server; also used by DHCP (Dynamic Host Configuration
Protocol)
68/UDP
BOOTP
client; also used by DHCP
69/UDP
TFTP
(Trivial File Transfer Protocol)
70/TCP
Gopher
protocol
79/TCP
Finger
protocol
80/TCP
HTTP
(Hypertext Transfer Protocol) - used for transferring web pages
81/TCP
HTTP
Alternate (Hypertext Transfer Protocol)
81/TCP Torpark
- Onion routing ORport
82/UDP Torpark
- Control Port Unofficial
88/TCP
Kerberos
- authenticating agent
101/TCP
HOSTNAME
102/TCP
ISO-TSAP
protocol
107/TCP
Remote
Telnet Service
109/TCP POP,
Post Office Protocol, version 2
110/TCP
POP3
(Post Office Protocol version 3) - used for retrieving E-mails
111/TCP UDP
SUNRPC protocol
113/TCP Identity
- old server identification system, still used by IRC servers to identify its
users
115/TCP SFTP,
Simple File Transfer Protocol
117/TCP
UUCP-PATH
118/TCP,UDP
SQL
Services
119/TCP
NNTP
(Network News Transfer Protocol) - used for retrieving newsgroups messages
123/UDP
NTP
(Network Time Protocol) - used for time synchronization
135/TCP,UDP
EPMAP
(End Point Mapper) / Microsoft RPC Locator Service
137/TCP,UDP
NetBIOS
NetBIOS Name Service
138/TCP,UDP
NetBIOS
NetBIOS Datagram Service
139/TCP,UDP
NetBIOS
NetBIOS Session Service
143/TCP,UDP
IMAP4
(Internet Message Access Protocol 4) - used for retrieving E-mails
152/TCP,UDP
BFTP,
Background File Transfer Program
153/TCP,UDP
SGMP,
Simple Gateway Monitoring Protocol
156/TCP,UDP
SQL
Service
158/TCP,UDP
DMSP,
Distributed Mail Service Protocol
161/TCP,UDP
SNMP
(Simple Network Management Protocol)
162/TCP,UDP
SNMPTRAP
170/TCP
Print-Server
179/TCP
BGP
(Border Gateway Protocol)
194/TCP
IRC
(Internet Relay Chat)
201/TCP,UDP
AppleTalk
Routing Maintenance
209/TCP,UDP
The
Quick Mail Transfer Protocol
213/TCP,UDP
IPX
218/TCP,UDP
MPP,
Message Posting Protocol
220/TCP,UDP
IMAP,
Interactive Mail Access Protocol, 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. ODMR, On-Demand Mail Relay
369/TCP,UDP
Rpc-2-portmap
371/TCP,UDP
ClearCase
albd
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)
401/TCP,UDP
UPS
Uninterruptible Power Supply
411/TCP
Direct
Connect Hub port
412/TCP
Direct
Connect Client-To-Client port
427/TCP, UDP
SLP (Service Location Protocol)
443/TCP
HTTPS
- HTTP Protocol over TLS/SSL (encrypted transmission)
444/TCP,UDP
SNPP,
Simple Network Paging Protocol
445/TCP
Microsoft-DS
(Active Directory, Windows shares, Sasser worm, Agobot, Zobotworm) Official
445/UDP
Microsoft-DS
SMB file sharing Official
464/TCP,UDP
Kerberos
Change/Set password Official
465/TCP
SMTP
over SSL - CONFLICT with registered Cisco protocol Conflict
500/TCP,UDP
ISAKMP,
IKE-Internet Key Exchange Official
512/TCP
Remote
Process Execution
