Campbell Scientific NL240 Wireless Network Link Interface - Manual (Page 39)

NL240 Wireless Network Link Interface
If the status of the TLS stack is Initialized, the NL240 will
automatically negotiate a secure TLS connection with DevConfig
as long as the Use IP Connection option is selected.
Encrypted Communication is required to change the TLS Private
Key and/or TLS Certificate via TCP. The private key and
certificate cannot be initialized via TCP, since the connection is
not encrypted. They must be initialized through a direct USB
connection to the NL240.
When the NL240 is in bridge mode, it cannot be configured via a
secure network connection, because in bridge mode the TLS stack
is not initialized. It can be configured via USB, RS-232, or an
unsecured network connection.
9. Applications
9.1 Working Around Firewalls
The NL240 can be used to provide a connection between LoggerNet and a
datalogger when both are behind firewalls. The NL240 must be on a public IP
address and will act as a common meeting place for all PakBus®
communications.
FIGURE 9-1. Working around firewalls
9.1.1 Configuring the NL240
• Connect to the NL240 in DevConfig (see Section 7, Configuring the
NL240).
• On the NL240 tab:
o Set Bridge Mode to disable.
o Set Use DHCP to disable.
NOTES
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