Campbell Scientific NL240 Wireless Network Link Interface User Manual

Page 65

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Appendix C. NL240 Settings

TLS Proxy Server Port Number

When doing TLS Proxy communications, the NL240 TLS server maintains a

secure connection with a remote client. If the TLS Proxy Forward Physical

Port is specified to be the CS I/O port, the NL240 will then open a TCP

connection with the logger over the CS I/O port and do unecrypted data

transfer with the datalogger. If the TLS Proxy Forward Physical Port is

specified to be Wi-Fi, the NL240 will open the TCP connection over Wi-Fi on

the TLS Proxy Forward IP Address.

In order to communicate with the NL240 TLS server, the client application

must open a socket to that server. The socket of the NL240 TLS server is

uniquely identified by the IP address and a port number. This entry is where

the port number of the NL240 TLS server is set.

The TLS client needs to be set to communicate on this port number. If secure

communications come in on the Secure Proxy Server Port Number, the NL240

will attempt to open a TCP connection to the datalogger on the Secure Proxy

Forward Port Number. Also, regardless of this setting, the NL240 Secure

Proxy Server will always listen on the secure HTTP (HTTPS) port number

443. If a secure connection is established on this port, the NL240 will attempt

to communicate to the datalogger on the HTTP port 80. (range 1..65535)

TLS Proxy Forward Physical Port

When doing TLS Proxy communications, the NL240 TLS server maintains a

secure connection with a remote client. If the TLS Proxy Forward Physical

Port is specified to be the CS I/O port the NL240 will then open a TCP

connection with the logger over the CS I/O port and do unecrypted data

transfer with the datalogger. If the TLS Proxy Forward Physical Port is

specified to be Wi-Fi, the NL240 will open the TCP connection over Wi-Fi on

the TLS Proxy Forward IP Address.

TLS Proxy Forward IP Address

Secure communications received on the NL240 TLS Server will be forwarded

on a non-secure TCP connection to this IP address. If the TLS Proxy Forward

Physical Port is specified to be the CS I/O port, this setting is not set by the user

since the NL240 will obtain the IP address of the datalogger automatically. If

the TLS Proxy Forward Physical Port is specified to be Wi-Fi, the forward IP

address must be specified. Enter the IP address of the destination datalogger

here.

TLS Proxy Forward Port Number

When doing TLS Proxy communications, the NL240 TLS server maintains a

secure connection with a remote client. If the TLS Proxy Forward Physical

Port is specified to be the CS I/O port, the NL240 will then open a TCP

connection with the datalogger over the CS I/O port and do unecrypted data

transfer with the datalogger. If the TLS Proxy Forward Physical Port is

specified to be Wi-Fi, the NL240 will open the TCP connection over Wi-Fi on

the TLS Proxy Forward IP Address.

In order to communicate with the connected datalogger’s TCP server, the

NL240’s TCP client application must open a socket to that server. The socket

C-15

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