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Default Ports

 

Ports utilised by default do depend on what operating system platform you are running.  Having a general idea of what default ports are open on a host is a good way to "fingerprint" it.  Knowing what services run on these ports also allows you to carry out a great deal of enumeration by banner grabbing to obtain version and system information.  From this information you can then plan your next step when carrying out the vulnerability assessment of the entire system.

 

The full listing from IANA is available locally, (790kb) zipped, (226kb) or from their site.

 

Default Unix Ports:

 

Service

Port

Echo

7

Daytime

13

qotd (Quote Of The Day)

17

FTP-data

20

FTP

21

SSH

22

Telnet

23

SMTP (Simple Mail Transfer Protocol)

25

Time server

37

Whois

43

DNS (Domain Name System)

53

TFTP (Trivial File Transfer Protocol)

69

Finger

79

HTTP (Hypertext Transfer Protocol)

80

POP2 (Post Office Protocol 2)

109

POP3 (Post Office Protocol 3)

110

Portmapper

111

Ident

113

NNTP (Network News Transfer Protocol)

119

NTP (Network Time Protocol)

123

Samba

137-9

IMAP2 (Internet Message Access Protocol)

143

SNMP (Simple Network Management Protocol)

161

BGP (Border Gateway Protocol)

179

IMAP3 (Internet Message Access Protocol)

220

LDAP (Lightweight Directory Access Protocol)

389

HTTPS (Secure Hypertext Transfer Protocol)

443

rlogin

513

rsh

514

Line printer (lpr) spooler

515

Talk

517

Time server

525

NNTPS (Secure Network News Transfer Protocol)

563

IPP (Internet Printing Protocol)

631

LDAPS (Secure Lightweight Directory Access Protocol)

636

IMAPS (Secure Internet Message Access Protocol)

993

POP3S (Secure Post Office Protocol)

995

NFS (Network File System)

2049

MySQL

3306

X11

6000-6063

XFS (X Font Server)

7100

 

Default Windows Ports:

 

Service

Port

FTP (default data channel)

20 

FTP (control channel)

21 

Telnet

23 

Whois

43 

Domain Name System

53

Bootp server

67

Bootp client

68

Trivial FTP

69 

Gopher

70

HTTP

80 

Kerberos

88 

POP-2 (Post Office Protocol)

109 

POP-3

110 

NNTP (Network News Transfer Protocol)

119 

NTP (Network Time Protocol)

123

NT RPC endpoint mapper

135

NetBIOS Name Service

137

NetBIOS Datagram Service

138

NetBIOS Session Service

139

IMAP (Internet Message Access Protocol)

143

SNMP

161

SNMP Trap

162 

BGP (Border Gateway Protocol)

179

IRC (Internet Relay Chat)

194

Computer Associates License Server

216

Checkpoint Firewall Management

256 

Checkpoint Firewall Log Management

257 

Checkpoint Firewall Management

258 

Checkpoint VPN-1 FWZ Key Management

259 

Checkpoint Alternate SNMP

260 

Checkpoint Firewall Management

261 

Checkpoint Firewall Topology Download

264 

Checkpoint VPN-1 Public Key Transfer Protocol

265 

LDAP (Lightweight Directory Access Protocol)

389 

HTTP over SSL

443

SNPP (Simple Network Paging Protocol)

444

Microsoft Direct SMB

445

Kerberos Password

464 

IKE (IPSEC Internet Key Exchange)

500 

RIP (Routing Information Protocol)

520 

Netware Core Protocol

524 

Kerberos Login

543 

Kerberos Shell

544 

NNTPS (Secure NNTP)

563 

HTTP RPC Endpoint Mapper

599

SOCKS Proxy

1080

SOCKS Proxy alternate

1081

Kazaa Network

1214 

Nessus

1241

Microsoft Operations Manager (MOM)

1270

Microsoft SQL Server

1433 

Microsoft SQL Monitor service

1434 

Citrix 1494

Sybase

1498 

Oracle TNS Listener

1521

Point-to-Point Tunneling Protocol (PPTP)

1723 

Winsock-proxy

1745 

Remotely Anywhere

2000 

Cisco device management, Remotely Anywhere

2001 

Compaq Insight Manager

2301 

Secure Compaq Insight Manager

2381    

Terminal Services

3389 

Cisco device management

4001 

PC Anywhere

56312

 

 

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