CBXi IP Controller |
IP Networking
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Subject to change without notice
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PORT NUMBERS
A “Port” on an IP device is a concept that allows traffic to be mapped within a device’s address to a
specific process running in that device. A Port number forms part of a data packet’s IP address, but is
often set by convention, depending on the protocol that the packet uses. For example, HTTP traffic by
convention uses port
80
. If no port is specified in the IP address for HTTP traffic, port 80 will be assumed.
If a port is specified (e.g. port
8080
as in the address
192
.
168
.
100
.
33
:
8080
), the specified port will be used
instead. This allows the device to communicate on multiple protocols at the same time.
Some of the services associated with port numbers include:
Service
Protocol
Default Port
Number
SMTP
TCP
25
DNS
TCP, UDP
53
DHCP
UDP
67
HTTP
TCP
80
HTTPS
TCP
443
BACnet/IP
UDP
47808
Some of the port numbers recognized by
CBXi
are shown below. These can be changed in the controllers
Web UI at
Communications
>
Serial Ports
>
IP Ports