Wichtige TCP-Portnummern
| 20 |
FTP (DATA) |
| 21 |
FTP |
| 22 |
SSH |
| 23 |
Telnet |
| 25 |
SMTP |
| 37 |
TIME |
| 43 |
WHOIS |
| 53 |
DNS |
| 69 |
TFTP (Trivial File Transfer) |
| 79 |
Finger |
| 80 |
WWW HTTP |
| 110 |
POP3 |
| 118 |
SQL |
| 119 |
NNTP |
| 123 |
NTP |
| 137 |
NETBIOS NAME SERVICE |
| 138 |
NETBIOS DATAGRAMM SERVICE |
| 139 |
NETBIOS SESSION SERVICE |
| 143 |
Interim Mail Access Protocoll V2 |
| 161 162 |
SNMP |
| 179 |
Border Gateway Protocol |
| 194 |
Internet Relay Chat Protovol |
| 389 |
LDAP |
| 443 |
HTTPS |
| 500 |
Key Exchange for IPSEC |
| 1512 |
WINS |
| 1701 |
L2TP |
| 1723 |
PPTP |
| 8080 |
HTTP Proxy |
|