Firewalls: Wie die Netzwerkhüter Angriffe aus dem Web abwehren

Port	wird verwendet von:
20	FTP Daten (File Transfer Protocol)
21	FTP (File Transfer Protocol)
22	SSH (Secure Shell)
23	Telnet
25	SMTP (Sendmail 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 News 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 über TCP)
993	SIMAP (Secure Internet Message Access Protocol)
995	SPOP (Secure Post Office Protocol)

Eine komplette Liste aller Portnummern finden Sie hier:

Inhalt