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Firewalls: what SHOULD I block?
(lemmy.wtf)
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this post was submitted on 27 Sep 2024
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In a nutshell,
Use wireshark
See if theres any weird connections going on (i.e you visit pancakes.com and wireshark shows unrelatedsite.com making a request as well)
Block unrelatedsite.com
Block from ports 1000 'till the very end (65565 if I'm not mistaken.) -- that is your "bread and butter" approach.
Nah, you (very likely) aren't and never will.
This is not great advise to say the least. You want to block all incoming but allow all outgoing.
Also visiting a https site will not magically ports. It uses 443/tcp and if you are using a site with WebRTC (used for calls on platforms like teams) ports 443/UDP and 50000-65535/UDP. However, there is no reason you need to know that unless you are in a professional field
Don't listen to this guy at all.