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submitted 1 week ago by Cornflake_Dog@lemmy.wtf to c/linux@lemmy.ml

Hey there folks,

I'm trying to figure out how to configure my UFW, and I'm just not sure where to start. What can I do to see the intetnet traffic from individual apps so I can know what I might want to block? This is just my personal computer and I'm a total newbie to configuring firewalls so I'm just not sure how to go about it. Most online guides seem to assume one already knows what they want to block but I don't even know how/where to monitor local traffic to figure out what I can/should consider blocking.

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[-] 0x0@programming.dev 9 points 1 week ago

What can I do to see the intetnet traffic from individual apps

Wireshark

what I might want to block?

One strategy is to block everything, and open ports as needed. Beware that most guides focus on inbound traffic, whereas you seem to be focusing on outbound traffic.

[-] ReversalHatchery@beehaw.org 1 points 1 week ago

wireshark does not work for individual apps, it cannot make a difference between traffic of process a and b.

[-] possiblylinux127@lemmy.zip 1 points 1 week ago* (last edited 1 week ago)

I'm not sure how Wireshark is related to firewalls honestly. It is mostly a layer 1 and 2 tool

[-] possiblylinux127@lemmy.zip 1 points 1 week ago

Why are we recommending Wireshark? That doesn't make any sense what so ever. If anything have them run a port scan with nmap.

This is crazy advise

this post was submitted on 27 Sep 2024
84 points (96.7% liked)

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