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Do you need to have a firewall on a linux desktop?
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this post was submitted on 06 Oct 2023
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No - If you are aware which programs open incoming ports. E.g. check with netstat -tulpe
Yes - If you want to make sure e.g. TCP port 22 or a webserver on 443 etc is only available from IP/Adapter xy. Or if you want to mess with filtering outgoing connections.
ss -tulp