ZyXEL Communications P-2900-4HB - Manual (Page 115)

P-2900-4HB User’s Guide
115
A
P P E N D I X
C
Common Services
The commonly used services and port numbers are shown in the following table.
Please refer to RFC 1700 for further information about port numbers. Next to the
name of the service, two fields appear in brackets. The first field indicates the IP
protocol type (TCP, UDP, or ICMP). The second field indicates the IP port number
that defines the service. (Note that there may be more than one IP protocol type.
For example, look at the DNS service. (UDP/TCP:53) means UDP port 53 and TCP
port 53.