Can people sell non-private software?
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So I was looking around Plesk's website to check out the features and poke around. I found the security section and they advertise they use these cool tools called Fail2Ban and ModSecurity (with atomicorp's rules).
Obviously I'll explore other options for what I'm looking for, but is that allowed in the world of open-source?
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Open source itself is a non-factor. It's the individual license that matters.
In the case of fail2ban as an example, that is a GPL license and is totally allowed to be sold and is all the time by the likes of Red Hat, Suse, Canonical, Oracle, etc
The GPL explicitly protects your right to sell.
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But Fail2Ban is free. So buying it from someone is pretty silly unless you want bundled support. Just download it, it's free.
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@scottalanmiller said:
But Fail2Ban is free. So buying it from someone is pretty silly unless you want bundled support. Just download it, it's free.
Read up on GNU's site about the difference between "Free" as a price or as in do-what-you-want: "Redistributing free software is a good and legitimate activity; if you do it, you might as well make a profit from it."
The more you know.
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These days nearly everyone sells free software. Even Mac OSX is resold OpenSource.