Campbell Scientific NL240 Wireless Network Link Interface - Manual (Page 37)

NL240 Wireless Network Link Interface
FIGURE 8-4. TLS proxy server configurations
Configuration A
In Configuration A, the NL240 decrypts TLS traffic and forwards the
unencrypted TCP traffic to the datalogger over the CS I/O port. The NL240 is
able to “learn” the IP address of the attached datalogger and will open a TCP
connection on the “learned” IP address.
Configuration B
In Configuration B, the NL240 decrypts TLS traffic and forwards the
unencrypted TCP traffic to the datalogger back out on the Wi-Fi port. The user
must specify an IP address and TCP port number for the forwarding TCP
connection.
To configure the NL240 TLS Proxy Server to communicate with a datalogger
attached to the CS I/O port or with a datalogger over an Wi-Fi connection,
open DevConfig and configure the following settings.
Settings Editor | TLS Proxy Server Tab
• Set the TLS Proxy Server setting to enable.
• Set the TLS Proxy Server Port Number. This is the TCP port number
on which the proxy server will listen for incoming connections. The TLS
Client also needs to be set to communicate on this port number. When
TLS communications are received on this port number, the NL240 will
decrypt the data and attempt to open a TCP connection to the datalogger
and forward the unencrypted data. In HTTPS communications, web
browsers use port 443. The NL240 will always listen on port 443
regardless of the value of this setting. Therefore, if HTTPS
communications are desired, it is unnecessary to configure this setting.
• Set the TLS Proxy Forward Physical Port to CS I/O Port for
Configuration A or to Wi-Fi for Configuration B.
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