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Database Security (Common-sense Principles)
Places that viruses and trojans hide on start up
Step-by-Step Guide to Using the Security Configuration Tool Set
Improving the Security of Your Site by Breaking Into it
Domain Name Robbery
XDCC - An .EDU Admin's Nightmare
Database Security
Database Security
Is Database Security an Oxymoron?
Database security: protecting sensitive and critical information
The database security blanket
Database security in your Web-enabled apps
Making Your Network Safe for Databases
SQL Injection: Modes of Attack, Defence, and Why It Matters
Database Security in High Risk Environments
Linksys Router Information (A collection)
Common Ports
Protection of the Administrator Account in the Offline SAM
Windows 2000 Security
The dangers of ftp conversions on misconfigured systems
Win98.BlackBat
AnnaKournikova worm decrypted
C/C++ made easy with GoGooSE 1.0
UNIX Bourne Shell Programming
BATCH ProgramminG
Assembly for nerds using linux
THE LATEST IN DENIAL OF SERVICE ATTACKS: "SMURFING"
The Ingredients to ARP Poison
Outlook 2002: can't send .exe file with Email
Windows 9x/Me Security and System Restrictions
Exploiting The IPC Share
Local Windows hacking
Windows Cryptic Error Messages
Windows NT Registry Tutorial
catch a macro virus
Protecting Files with Windows NTXP
Microsoft Baseline Security Analyzer V1.1
A Beginners Guide To Wireless Security
Default Logins and Passwords for Networked Devices
How To Eliminate The Ten Most Critical Internet Security Threats
About computer crime
System Backdoor Information
System Backdoors Explained
Introduction to Buffer Overflow
Donald Pipkin's Security Tips for the Week of December 23rd
Getting IP data from numerous sources
Rainbow Series Library [The One The Only]
Honeypots (Definitions and Value of Honeypots)
General Attack Descriptions
Wireless Taping
CYBERTERRORISM
Security from a different angle
 

 

Common Ports

The following is a list of common ports. During a network security audit, port scans will be perfeormed to determine what network services are available. These services can be on different Operating systems.

Technorati Tags: Common Ports
20 FTP data (File Transfer Protocol)
21 FTP (File Transfer Protocol)
22 SSH (Secure Shell)
23 Telnet
25 SMTP (Send Mail Transfer Protocol)
43 whois
53 DNS (Domain Name Service)
68 DHCP (Dynamic Host Control Protocol)
79 Finger
80 HTTP (HyperText Transfer Protocol)
110 POP3 (Post Office Protocol, version 3)
115 SFTP (Secure File Transfer Protocol)
119 NNTP (Network New Transfer Protocol)
123 NTP (Network Time Protocol)
137 NetBIOS-ns
138 NetBIOS-dgm
139 NetBIOS
143 IMAP (Internet Message Access Protocol)
161 SNMP (Simple Network Management Protocol)
194 IRC (Internet Relay Chat)
220 IMAP3 (Internet Message Access Protocol 3)
389 LDAP (Lightweight Directory Access Protocol)
443 SSL (Secure Socket Layer)
445 SMB (NetBIOS over TCP)
666 Doom
993 SIMAP (Secure Internet Message Access Protocol)
995 SPOP (Secure Post Office Protocol)

Ports between 1024 and 29151 are known as the Registered Ports. Basically, programs are supposed to register their use of these ports and thereby try to be careful and avoid stomping on each other. Here are some common ports and their programs.

1243 SubSeven (Trojan - security risk!)
1352 Lotus Notes
1433 Microsoft SQL Server
1494 Citrix ICA Protocol
1521 Oracle SQL
1604 Citrix ICA / Microsoft Terminal Server
2049 NFS (Network File System)
3306 mySQL
4000 ICQ
5010 Yahoo! Messenger
5190 AOL Instant Messenger
5632 PCAnywhere
5800 VNC
5900 VNC
6000 X Windowing System
6699 Napster
6776 SubSeven (Trojan - security risk!)
7070 RealServer / QuickTime
7778 Unreal
8080 HTTP
26000 Quake
27010 Half-Life
27960 Quake III
31337 BackOrifice (Trojan - security risk!)

For a complete list of Trojans & their ports, see http://www.simovits.com/nyheter9902.html

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