Re:Bypassing Firewalls in macOS Big Sur
by cybralx on Saturday November 14, 2020 @07:48PM
(#25097047)
I built something similar to this[1] for when I'm dealing with hosts I don't have complete control of -- to block outgoing connections. Now it seems there might be a more widespread use case.
[1] https://www.badllama.com/content/portable-raspberry-pi-firew...
See also: https://wiki.c2.com/?TheKenThompsonHack
Re:Bypassing Firewalls in macOS Big Sur
by MikusR on Saturday November 14, 2020 @10:18PM
(#25097927)
https://en.wikipedia.org/wiki/Hosts_(file)
If you want to block something use a firewall.
Even an external firewall can't easily block everything. Just send telemetry over port 443 to an AWS server and most can't block it. You can't trust a device that need an outgoing firewall.
Re:Bypassing Firewalls in macOS Big Sur
by justinclift on Saturday November 14, 2020 @11:53PM
(#25098362)
"use a firewall" -> "use an external firewall". :)
I believe Win10 was the first to do something like this --- it ignores the hosts files and firewall for certain hardcoded domain names and IPs.