11 Systat(On some UNIX machines, creating a TCP connection to this port will dump the active processes and who launched them)
15 Netstat(A variant of systat)
22 SSH(the default port for some pcAnywhere services. Note that there is not relationship with pcAnywhere and ssh.)
31 Master Paradise
79 Finger(Port to finger someone through)
80 HTTP(HyperText Transfer Protocol, Hypertext is electronic text with cross-referenced links between collections of text)
110 POP3(Post Office Protocol, TCP)
113 Ident(used to identify the "owner" of a connection. Reveals a lot of information to hackers.)
139 NetBIOS(Windows File and Printer Sharing, This is the most dangerous port. All "File and Printer Sharing" on Windows runs over this port)
443 Secure HTTP(This is the default port used when you do credit card transactions with an e-commerce site)
1080 Socks(Most scans for port 1080 are actually looking for WinGate, a popular firewall/proxy for Windows)
12345 Netbus(A trojan horse used by newbees)
8080 Proxy(This is a common port that contains HTTP servers and proxies)
27374 SubSeven(A trojan horse used by newbees)
23 Telnet(you find the program telnet in C:/windows)
43 Whois(Whois, Nickname)
21 File Tranfer Protocol
6400 the tHing, a trojan
12345 NetBus 1.x
20034 NetBus Pro
31337 BackOrifice
30100 NetSphere
6670 Deep Throath
1001 Silencer
20000 Millenium
7306 NetMonitor
1170 Streaming Audio Trojan
5000 Socket23
30303 Socket25
6969 Gatecrasher
61466 Telecommando
12076 Gjamer
4950 IcqTrojen
16969 Priority
1245 Voodoo
5742 Wincrash
1033 Netspy
1033 Netspy
1981 ShockRave
555 Stealth Spy
2023 Pass Ripper
666 Attack FTP
21554 GirlFriend
50766 Fore
6883 DeltaSource (DarkStar)
34324 Tiny Telnet Server
30999 Kuang
11000 SennaSpyTrojans
1999 Backdoor
1001 WebEx
23456 UglyFtp
2001 TrojanCow
40412 TheSpy
2565 Striker
1001 Silencer
5569 RoboHack
53001 RemoteWindowsShutdown
22222 Prosiak 0.47
11223 ProgenicTrojan
4950 IcqTrojan
5400 BladeRunner
1243 SubSeven
65000 Devil 1.03
25 STMP Mail(Mail server, you can access them via telnet)
53 DNS(Doman Name System, aka NameServer)
