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Systemd services and networking permissions?


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I have a hypothetical.

I was running a script as system service . The script makes calls to networking tools. Some of those tools are getting no route to host errors. I'm pretty sure the network is up. I can login on all of the test machines and scan them. There's definitely network services on all of the machines. I think the problem is with the service having permissions on certain ports or systemd not allowing services to use certain ports or services. But I'm not really sure I haven't ran into this problem before.

What are some  possible problems systemd services can have with permissions on networking services and how do I fix? Besides the unit file (.service) are there some other configuration files I need to edit to make networking services available to my script?

Sorry if this is a little vague.

What are some good references on system services and networking permissions?

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