↳ In-reply-to » Fuck me dead, what a giant piece of shit. On my Linux work laptop I have the problem that some unknown snakeoil "security" junk is dropping any IPv4 connections to ports 80 and 443. All other ports and IPv6 seem unaffected. I get an immediate "connection refused" when trying to estabslish a connection.

Thank you, @movq@www.uninformativ.de! Luckily, I can disable it. I also tried it, no luck, though. But the problem is, I don’t really know how much snakeoil actually runs on my machine. There is definitely a ClownStrike infestation, I stopped the falcon sensor. But there might be even more, I’ve no idea. From the vague answers I got last time, it feels like even the UHD/IT guys don’t know what is in use. O_o

Yeah, it is definitely something on my laptop that rejects connections to IPv4 ports 80 and 443. All other devices here can access the stuff without issue, only this work machine is unable to. The “Connection refused” happens within a few milliseconds.

Unfortunately, I do not have the slightest idea how it works. But maybe I can look into that tomorrow. Kernel modules are a very good hint, thank you! <3

You’re right, it might be some sort of fail-safe mechanism. But then, why just block IPv4 and not also IPv6? But maybe because the VPN and company servers require IPv4, there is zero IPv6 support. (Yeah, don’t ask, I don’t understand it either.)