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Firewalls: what SHOULD I block?
(lemmy.wtf)
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Many people use laptops and use other wifi networks or tether to their phone, both can expose you because of unknown firewall states or IPv6 being used.
Yes, I am one of those people, literally all the time. This is the point of laptops.
And I use default Ubuntu Desktop config, kept up to date of course.
If that makes me and OP sitting targets, then maybe we should address this concern to the people who make distros rather than to a random anxious newbie.
Your phone tether will NAT you and not route any incoming packets that aren't part of a connection initiated by your host. Firewwll does nothing and anyway you wouldn't even have any open port inside the LAN unless you run services that open ports.