
SymphoniePRO User Manual
Rev. 8
[email protected] | Page 133
11 January 2018
The duration of the connection is set for one hour by default. If a longer connection is required, use the MetLink
Listening duration box to choose a connection time greater than one hour.
Configuration of User Network
The user’s network will need to be configured to receive the inbound connections from SymphoniePRO loggers.
This configuration may involve multiple firewalls and/or routers. Using the example above, when the connection
comes into host.mycompany.com on port 30406, the connection needs to be forwarded to a specific PC running
the SymphoniePRO Desktop application. Because even the most basic configuration will involve a router, it is
important to understand how port forwarding works. The SymphoniePRO Desktop application running on the
user’s PC always expects connections to appear on port 30406. So, in our example, when a connection to
“host.mycompany” on port 30406 occurs, the router will “port forward” the connection to “User PC1” on port
30406. Note the port 30406 at “host.mycompany.com” was selected somewhat arbitrarily, and any free
outward facing port can be used. For example, if the logger was configured to connect to
“host.mycompany.com” on port 30408, the router port forwarding configuration would need to route incoming
connections at “host.mycompany.com” on port 30408 to “User PC1” on port 30406.
Note - It is important to engage your IT professionals early on so that the appropriate rules can be created for
your particular network infrastructure and policies.
Configuration of Windows Firewall
In addition to any corporate firewalls and firewalls associated with anti-virus software, a Windows PC has its
own firewall, and a rule needs to be added so inbound connections can make it to the SymphoniePRO Desktop
Application.
The rule will allow the PC to accept TCP connections on port 30406, and the SymphoniePRO Desktop Application
will create the rule during the installation process as long as the user checks the box to add firewall rules during
the software installation process. Another rule is created to allow connections out through port 30407.
Additionally, Microsoft has extensive information on Windows Firewall.
SymphoniePRO Desktop Application is the Master
Once a logger is connected to the SymphoniePRO Desktop Application through MetLink, the logger acts as a
server and waits for commands from the client software (SymphoniePRO Desktop Application). Common
MetLink actions (commands) include downloading of data and administering configuration changes on the
logger, such as adjusting scale factors or applying new firmware. One important concept to recognize is that
software function is independent of the connection transport, and a user who is remotely connected can
perform most of the same actions a user can perform when connected locally through USB.
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