61 Chapter 7
TCP Port number
Figure 7.5:
The TCP port number represents the source port number in TCP connec-
tions, and is the number used to identify the channel for remote initiating
connections. Range: 1-65535.
If an unknown caller wants to connect to the system and asks for some
services, they need to define the TCP port to carry a long-term conversa-
tion.
Each node on a TCP/IP network has an IP address, and each IP address
can allow connections on one or more TCP port. The well-known TCP
port are those that have been defined; for example, port 23 is used for Tel-
net connections. There are also custom sockets that users and developers
define for their specific needs. The default TCP port of EDG-4508+U/
4516+U is 5200. Opening a TCP session to port 5200 will form a raw
TCP/IP connection to the serial port.
Only configure the authorized IP
Figure 7.6:
This option is enabled in order to protect all configuration settings from
being changed inadvertently.
Note 1: If the serial port is in use, the socket
connection will be refused.
2: Timing between serial signals (such as DSR,
RTS, and DCD) is not preserved, and the state
of such signals is not readable.