TCP / IP  Portnummern
feste Ports		registrierte Ports		private / dynamische Ports
0 ... 1023		1024 ... 49151		49152 ... 65535
z.B.		z.B.		z.B.
7	Ping	1080	Socks-Proxy	für NAT
11	SYSTAT	1723	PPTP  (VPN)	(Network Address Translation)
20	FTP-Data	5000	UPnP
21	FTP	8080	Web-Proxy
22	SSH
23	Telnet	Trojaner :
25	SMTP (Mail send.)	6776	SubSeven
53	DNS	12345	NetBus
69	TFTP	20034	NetBus 2
79	Finger	31337	BackOrifice
80	HTTP  (www)
110	POP 3 (Mail empf.)
113	IDENT
119	NNTP
139	NetBIOS
143	IMAP
194	IRC
443	HTTPS