X3200
User’s Guide
291
Access Security
7
Port numbers
The port numbers are distributed as follows:
Table 7-15:
Port number ranges
The following table contains a list of some frequently used port numbers with
the services assigned to them:
0 ... 1023
1024 ... 4999
5000 ... 32767
32768 ... 65535
Well-known ports,
i.e. permanently
assigned.
priv (0..1023)
The ports are created dynamically by
➤➤
clients
and
➤➤
servers
and have no permanent meaning
(with the exception of special agreements):
unpriv (1024..65535)
clients 1
(1024.0.4999)
server
(5000..32767)
clients 2
(32768..65535)
Service
Protocol
Port number
File Transfer Protocol (
➤➤
FTP
) (data)
TCP
20
File Transfer Protocol (FTP) (commands)
TCP
21
Telnet
TCP
23
Simple Mail Transfer Protocol (SMTP)
TCP
25
Domain Name Server (
➤➤
DNS
)
TCP, UDP
53
Trivial File Transfer Protocol
(
➤➤
TFTP
)
UDP
69
HTTP
TCP
80
POP3 (e-mail inquiry)
TCP
110
Network Time Protocol
TCP, UDP
119
➤➤
NetBIOS
Name (NBNAME)
UDP
137
NetBIOS Datagram (NBDATA)
UDP
138
NetBIOS Session (NBSESSION)
TCP
139
Simple Network Management Protocol
(SNMP) (Port Lists)
UDP
161
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