_firewall_config.py: add NI services to default firewall configuration #50
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NTP is a basal network service on par with DHCP: if it can't be trusted, large chunks of the remaining security infrastructure become infeasible. At the moment, it probably needs to be permitted unencrypted. Signed-off-by: Richard Tollerton <[email protected]>
In addition to http/https (already added), SystemLink clients also generally require outbound access to AMQP (ports 4505, 4506) and Salt master (port 5672) servers. These services already exist in firewalld and should be permitted by default to allow SystemLink traffic over VPN. Note that the Salt master protocol possesses its own encryption and so could conceivably be exposed over the public network; however, AMQPS is on a separate port (5671) and I don't believe SystemLink supports that. Discovered by code inspection. Signed-off-by: Richard Tollerton <[email protected]>
Install the ni-firewalld-servicedefs package to gain access to NI service definitions, then use those to open up necessary ports for inbound access to LabVIEW RT, shared variables/network streams, and device configuration. Signed-off-by: Richard Tollerton <[email protected]>
Signed-off-by: Richard Tollerton <[email protected]>
AlexHearnNI
approved these changes
Dec 16, 2024
amstewart
approved these changes
Dec 16, 2024
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Summary of Changes
Install ni-firewall-servicedefs to expose NI services to firewalld; enable services for core NI software functionality.
Allow NTP over the public network.
Testing
nilrt-snac configuresucceeds; firewall configuration verified manually.Procedure